整数方程专项练习166题.docx

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整数方程专项练习166题

整数方程专项练习166题(有答案)

 

(1)48x+x=98,

(2)3x÷7=120,

(3)15x﹣5+x=43,

(4)2x+5=5x﹣7,

(5)3(x﹣2)=2﹣5(x﹣2),

(6)4x﹣3(20﹣x)+4=0,

(7)4x+2(8﹣x)=26,

(8)7x﹣5x=2+12,

(9)3x+7=32﹣2x,

(10)2(x+2)﹣3=3x﹣5,

(11) 8(x﹣2)=2x+8,

(12)3×(2x+7)=45,

(13)164÷2+83=11x,

(14)56+28﹣x=12,

(15)8X+20X=84,

(16)20﹣5x=5,

(17)7+2x﹣9=0,

(18)13x﹣9×5=20,

(19)3x﹣5=11﹣x,

(20)3x﹣5=x+1,

(21)3(x﹣5)=123,

(22)3x﹣16×4=119,

(23)3(x﹣12)+23=35

(24)7x+20=83,

(25)7x+10÷2=19,

(26)3x÷12=75,

(27)4x﹣3(20﹣x)=5x

(28)4x+2(79﹣x)=192,

(29)3204=450+5X+X,

(30)(5+x)+x=98÷2,

(31)76(x﹣2)=52x﹣32

(32)3(x﹣12)=2(x﹣4)

(33)3(x+2)=4(x+1),

(34)4(x﹣9)=8

 

(35)8x﹣(5﹣2x)=45

(36)6000﹣x=3085,

(37)29×x=2958,

(38)41600÷x=320,

(39)18﹣3x=54÷18,

(40)(x+5)÷2=108

(41)4x﹣12=3×8,

 

(42)23+4x=71

(43)3x÷4=30

 

(44)91﹣5x=36

 

(45)3x+2x=25

(46)24﹣3x=18

(47)8x+2×5=26

(48)6x+4x=160

(49)6x﹣12=108

(50)9x+5x=8.4

(51)5x﹣25=5

 

(52)10x﹣8x=2

(53)2x+23×4=134

(54)3x+x+6=26

(55)X÷109=27+23

(56)(569+4827)÷X=284

(57)100×(X+100)=12000

 

(58)x﹣72=25×5

(59)38+5x=243

(60)3(5x﹣4)=48

(61)3x+24=5x﹣12

(62)910÷x=13,

(63)36x÷16=18,

(64)40x﹣23x=105,

(65)532﹣x=196,

(66)x÷62=438,

(67)74×x=9102,

(68)x+634=856,

(69)8x﹣3x=155,

(70)30×(x÷4)=60,

 

(71)72×5﹣3x=12,

(72)x+175=366

 

(73)2000﹣x=1384

(74)x÷14=250

 

(75)45×x=4680

(76)x×39=200+34

(77)3780÷x=18

 

(78)532﹣x=196

(79)x÷62=48

 

(80)74×x=2812

 

(81)4x﹣3×9=29,

(82)13(x+5)=169,

(83)4x﹣6=30

(84)4x﹣2x=48

(85)5x÷9=25

(86)2y+3y+60=145

(87)16x÷2=128

(88)6x+180=330

 

(89)13x+7=150

(90)200÷5x=40

 

(91)4×(3x+6)=48,

(92)5×(x+24)=255,

 

(93)(x﹣12)÷4=4.5,

 

(94)45x+x=368,

(95)454﹣2x=226

(96)20×3﹣x=40

(97)(52+34)×x=5590

(98)x÷43=508

 

(99)x﹣4.3=9.08

 

(100)488÷x=61

(101)6x﹣35=13

(102)38﹣12+x=54

(103)34x﹣48=268,

(104)13(X+5)=169,

(105)8×4﹣3x=2,

(106)5x﹣2x=9.6,

(107)25x÷2=100,

 

(108)32x+61x=154,

(109)3x+(25+15)=1600,

(110)3x﹣7=62

(111)4x﹣4×25=80

(112)(x+3)÷2=6

(113)19﹣2X=5,

(114)2X+23×4=134,

(115)9X﹣45=135,

 

(116)X﹣34=200,

(117)6X+7X=650,

(118)14×70﹣5X=800,

(119)44+X=52

(120)91﹣X=46,

(121)X﹣16=77,

(122)X×29=348,

 

(123)35×X=210,

(124)X÷327=9,

(125)8640÷X=320,

 

(126)840×X=840,

 

(127)420+X×5=1670,

 

(128)1224÷X+109=211,

 

(129)5x÷21=30

(130)10+9x=199

(131)5(x+5)=355

(132)6x+15=51,

(133)3(x﹣8)=27,

(134)x÷28=82,

 

(135)14x﹣7x=56,

(136)7χ﹣2×9=80,

(137)7+5χ=42,

(138)264+3x=363

(139)3x+2x=65

(140)2x﹣5×2=8

(141)534+x=3060

 

(142)46+3x=133

 

(143)7x÷4=21

 

(144)3x+9=15

(145)x÷12=6

(146)136﹣x=60

 

(147)x×34=2924,

 

(148)186×x=2604,

 

(149)x+723=1280,

 

(150)8670÷x=15,

 

(151)x÷28=147,

 

(152)7083﹣x=3465,

(153)3x+5=20,

(154)40x+20x=120,

(155)40﹣5x=30,

(156)7x﹣50=160

(157)32+17﹣x=40

(158)8x÷4=40

(159)91﹣5x=36

(160)8(2X﹣7)=5(X+13),

(161)3(x+4.5)=60,

 

(162)X÷11=3,

(163)13(X+5)=169,

 

(164)4X﹣9×7=342,

(165)2X﹣97=342,

(166)4x﹣5×6=12,

参考答案:

 

(1)48x+1x=98,

49x=98,

49x=98÷49,

x=2;

(2)3x÷7=120,

3x÷7×7=120×7,

3x=840,

3x÷3=840÷3,

x=280,

(3)15x﹣5+x=43,

16x﹣5=43,

16x﹣5+5=43+5,

16x=48,

x=3.

(4)2x+5=5x﹣7,

2x+5﹣2x=5x﹣7﹣2x,

3x﹣7=5,

3x﹣7+7=5+7,

3x=12,

3x÷3=12÷3,

x=4;

(5)3(x﹣2)=2﹣5(x﹣2),

3x﹣6=12﹣5x,

3x﹣6+5x=12﹣5x+5x,

8x﹣6=12,

8x﹣6+6=12+6,

8x=18,

8x÷8=18÷8,

x=2.25;

(6)4x﹣3(20﹣x)+4=0,

7x﹣56=0,

7x﹣56+56=0+56,

7x=56,

7x÷7=56÷7,

x=8;

(7)4x+2(8﹣x)=26,

2x+16=26,

2x+16﹣16=26﹣16,

2x=10,

2x÷2=10÷2,

x=5. 

(8)7x﹣5x=2+12,

2x=14,

x=7;

(9)3x+7=32﹣2x,

3x+2x=32﹣7,

5x=25,

x=5

(10)2(x+2)﹣3=3x﹣5,

2x+4﹣3=3x﹣5,

2x+1+5=3x﹣5+5,

2x+6=3x,

2x+6﹣2x=3x﹣2x,

x=6

(11) 8(x﹣2)=2x+8,

8x﹣16+16=2x+8+16,

8x=2x+24,

8x﹣2x=2x+24﹣2x,

6x=24,

6x÷6=24÷6,

x=4

(12)3×(2x+7)=45,

3×(2x+7)÷3=45÷3,

2x+7﹣7=15﹣7,

2x÷2=8÷2,

x=4

(13)164÷2+83=11x,

11x=165,

11x÷11=165÷11,

x=15;

(14)56+28﹣x=12,

84﹣x=12,

84﹣x+x=12+x,

12+x=84,

12+x﹣12=84﹣12,

x=72

(15)8X+20X=84,

x(8+20)=84,

28x=84,

28x÷28=84÷28,

x=3;

(16)20﹣5x=5,

20﹣5x+5x=5+5x,

5+5x=20,

5+5x﹣5=20﹣5,

5x=15,

5x÷5=15÷5,

x=3

(17)7+2x﹣9=0,

7+2x﹣9+9=0+9,

7+2x=9,

7+2x﹣7=9﹣7,

2x=2,

2x÷2=2÷2,

x=1;

(18)13x﹣9×5=20,

13x﹣45=20,

13x﹣45+45=20+45,

13x=65,

13x÷13=65÷13,

x=5

(19)3x﹣5=11﹣x,

3x﹣5+x=11﹣x+x,

4x﹣5+5=11+5﹣x,

4x÷4=16÷4,

x=4

(20)3x﹣5=x+1,

3x﹣5﹣x=x+1﹣x,

2x﹣5=1,

2x﹣5+5=1+5,

2x=6,

2x÷2=6÷2,

x=3;

(21)3(x﹣5)=123,

3(x﹣5)÷3=123÷3,

x﹣5=41,

x﹣5+5=41+5,

x=46

(22)3x﹣16×4=119,

3x﹣64=119,

3x﹣64+64=119+64,

3x=183,

3x÷3=183÷3,

x=61;

(23)3(x﹣12)+23=35

3x﹣36+23=35

3x﹣13=35

3x﹣13+13=35+13

3x=48

3x÷3=48÷3

x=16

(24)7x+20=83,

7x+20﹣20=83﹣20,

7x=63,

7x÷7=63÷7,

x=9;

(25)7x+10÷2=19,

7x+5=19,

7x+5﹣5=19﹣5,

7x÷7=14÷7,

x=2;

(26)3x÷12=75,

3x=75×12,

3x÷3=900÷3,

x=300; 

(27)4x﹣3(20﹣x)=5x

4x﹣60+3x=5x

7x﹣60=5x

7x﹣60﹣5x=5x﹣5x

2x﹣60=0

2x=60

x=30

(28)4x+2(79﹣x)=192,

4x+158﹣2x=192,

2x+158=192,

2x+158﹣158=192﹣158,

2x÷2=34÷2,

x=17.

(29)3204=450+5X+X,

3204=450+6X,

3204﹣450=450+6X﹣450,

2754÷6=6X÷6,

X=459;

(30)(5+x)+x=98÷2,

5+2x=49,

5+2x﹣5=4.9﹣5,

2x÷2=44÷2,

x=22

(31)76(x﹣2)=52x﹣32

76x﹣152=52x﹣32

76x﹣152+152=52x﹣32+152

76x=52x+120

76x﹣52x=52x+120﹣52x

24x=120

24x÷24=120÷24

x=5

(32)3(x﹣12)=2(x﹣4)

3x﹣36=2x﹣8

3x﹣36+36=2x﹣8+36

3x=2x+28

3x﹣2x=2x+28﹣2x

x=28

(33)3(x+2)=4(x+1),

3x+6=4x+4,

3x+6﹣3x=4x+4﹣3x,

x+4=6,

x+4﹣4=6﹣4,

x=2

 (34)4(x﹣9)=8

4(x﹣9)÷4=8÷4

x﹣9=2

x﹣9+9=2+9

x=11

(35)8x﹣(5﹣2x)=45

8x﹣5+2x=45

10x﹣5+5=45+5

10x÷10=50÷10

x=5

(36)6000﹣x=3085,

6000﹣x+x=3085+x,

3085+x=6000,

3085+x﹣3085=6000﹣3085,

x=2915;

(37)29×x=2958,

29×x÷29=2958÷29,

x=102;

(38)41600÷x=320,

41600÷x×x=320×x,

320x=41600,

320x÷320=41600÷320,

x=130

(39)18﹣3x=54÷18,

18﹣3x=3,

18﹣3x+3x=3+3x,

3+3x=18,

3+3x﹣3=18﹣3,

3x=15,

3x÷3=15÷3,

x=5;

(40)(x+5)÷2=108

(x+5)÷2×2=108×2,

x+5=216,

x+5﹣5=216﹣5,

x=211;

(41)4x﹣12=3×8,

4x﹣12+12=3×8+12,

4x=36,

4x÷5=36÷4,

x=9

(42)23+4x=71

23+4x﹣23=71﹣23

4x÷4=48÷4

x=12

(43)3x÷4=30

3x÷4×4÷3=30×4÷3

x=40

(44)91﹣5x=36

91﹣5x+5x﹣36=36﹣36+5x

5x÷5=55÷5

x=11

 

(45)3x+2x=25

5x=25

5x÷5=25÷5

x=5

(46)24﹣3x=18

24﹣3x+3x=18+3x

18+3x=24

18+3x﹣18=24﹣18

3x=6

3x÷3=6÷3

x=2

(47)8x+2×5=26

8x+10=26

8x+10﹣10=26﹣10

8x=16

8x÷8=16÷8

x=2

(48)6x+4x=160

10x=160

10x÷10=160÷10

x=16

(49)6x﹣12=108

6x+12﹣12=108+12

6x=120

6x÷6=120÷6

x=20

(50)9x+5x=8.4

14x=8.4

14x÷14=8.4÷14

x=0.6

(51)5x﹣25=5

5x+25﹣25=5+25

5x=30

5x÷2.5=30÷5

x=6

(52)10x﹣8x=2

2x=2

2x÷2=2÷2

x=1

(53)2x+23×4=134

2x+92=134

2x+92﹣92=134﹣92

2x=42

2x÷2=42÷2

x=21

(54)3x+x+6=26

4x+6﹣6=26﹣6

4x=20

4x÷4=20÷4

x=5

(55)X÷109=27+23

X÷109=50

X÷109×109=50×109

X=5450;

(56)(569+4827)÷X=284

5396÷X=284

5396÷X×X=284×X

284X=5396

284X÷284=5396÷284

X=19;

(57)100×(X+100)=12000

100×(X+100)÷100=12000÷100

X+100=12

X+100﹣100=120﹣100

X=20

(58)x﹣72=25×5

x﹣72=125

x﹣72+72=125+72

x=197

(59)38+5x=243

38+5x﹣38=243﹣38

5x÷5=205÷5

x=41

(60)3(5x﹣4)=48

15x﹣12=48

15x﹣12+12=48+12

15x=60

15x÷15=60÷15

x=4;

(61)3x+24=5x﹣12

3x+24﹣3x=5x﹣12﹣3x

2x﹣12=24

2x﹣12+12=24+12

2x=36

2x÷2=36÷2

x=18

 (62)910÷x=13,

x=910÷13,

x=70;

(63)36x÷16=18,

36x÷16×16=18×16,

36x=288,

36x÷36=288÷36,

x=8;

(64)40x﹣23x=105,

17x=105,

17x÷17=105÷17,

x=5;

(65)532﹣x=196,

532﹣x+x=196+x,

196+x=532,

196+x﹣196=532﹣196,

x=336;

(66)x÷62=438,

x÷62×62=438×62,

x=27156;

(67)74×x=9102,

74×x÷74=9102÷74,

x=23;

(68)x+634=856,

x+634﹣634=856﹣634,

x=222

 

(1)4x﹣5×6=12,

4x﹣30=12,

4x﹣30+30=12+30,

4x=42,

4x÷4=42÷4,

x=10.5;

(69)8x﹣3x=155,

5x=155,

5x÷5=155÷5,

x=31;

(70)30×(x÷4)=60,

30×(x÷4)÷30=60÷30,

x÷4=2,

x÷4×4=2×4,

x=8;

(71)72×5﹣3x=12,

360﹣3x=12,

360﹣3x+3x=12+3x,

3x+12=360,

3x+12﹣12=360﹣12,

3x=348,

3x÷3=348÷3,

x=116

(72)x+175=366

x+175﹣175=366﹣175

x=191

(73)2000﹣x=1384

2000﹣x+x=1384+x

2000﹣13.84=1384+x﹣1384

x=616

(74)x÷14=250

x÷14×14=250×14

X=3500

(75)45×x=4680

45×x÷45=4680÷45

x=104

(76)x×39=200+34

x×39=234

x×39÷39=234÷39

x=6

(77)3780÷x=18

3780÷x×x=18×x

3780÷18=18×x÷18

x=210

(78)532﹣x=196

532﹣x+x=196+x

196+x=532

196+x﹣196=532﹣196

x=336;

(79)x÷62=48

x÷62×62=48×62

x=2976;

(80)74×x=2812

74×x÷74=2812÷74

x=38

 (81)4x﹣3×9=29,

4x﹣27=29,

4x﹣27+27=29+27,

4x=56,

4x÷4=56÷4,

x=14;

(82)13(x+5)=169,

13x+65=169,

13x+65﹣65=169﹣65,

13x=104,

13x÷13=104÷13,

x=8

(83)4x﹣6=30

4x﹣6+6=30+6

4x÷4=36÷4

x=9;

(84)4x﹣2x=48

2x=48

2x÷2=48÷2

x=24;

(85)5x÷9=25

5x÷9×9=25×9

5x=225

5x÷5=225÷5

x=45;

(86)2y+3y+60=145

5y+60=145

5y+60﹣60=145﹣60

5y=85

5y÷5=85÷5

y=17

(87)16x÷2=128

8x=128

8x÷8=128÷8

x=16;

(88)6x+180=330

6x+180﹣180=330﹣180

6x÷6=150÷6

x=25

(89)13x+7=150

13x+7﹣7=150﹣7

13x÷13=143÷13

x=11

(90)200÷5x=40

200÷5x×5x=40×5x

200x=200

200x÷200=200÷200

x=1

(91)4×(3x+6)=48,

4×(3x+6)÷4=48÷4,

3x+6﹣6=12﹣6,

3x÷3=6÷3,

x=2;

(92)5×(x+24)=255,

5×(x+24)÷5=255÷5,

x+24﹣24=51﹣24,

x=27;

(93)(x﹣12)÷4=4.5,

(x﹣12)÷4×4=4.5×4,

x﹣12+12=18+12,

x=30;

(94)45x+x=368,

46x=368,

46x÷46=368÷46,

x=8

(95)454﹣2x=226

454﹣2x+2x=226+2x

454﹣226=226+2x﹣226

2x=228;

X=114

(96)20×3﹣x=40

60﹣x+x=40+x

60﹣40=40+x﹣40

x=20;

(97)(52+34)×x=5590

86x=5590

86x÷86=5590÷86

x=65;

(98)x÷43=508

x÷43×43=508×43

x=21844;

(99)x﹣4.3=9.08

x﹣4.3+4.3=9.08+4.3

x=13.38;

(100)488÷x=61

488÷x×x=61×x

488÷61=61x÷61

x=8

(101)6x﹣35=13

6x﹣35+35=13+35

6x=48

6x÷6=48÷6

x=8;

(102)38﹣12+x=54

26+x=

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