七年级数学上册解方程专项练习 250.docx
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七年级数学上册解方程专项练习250
5(-3x-5)+4x=7
(x-2)-(9x+3)=-
-
=2
y-
=5-
0.2x-0.2=4.5-26x
4(x-5)+5(x-5)=10
2x-4(20-x)=-3
(100+x)-
(400-x)=400×
16x-31=6x+20
4x=
x+10
5(4-x)=-5(x+2)
2(-4x-2)+2x=7
(x-8)-(8x+8)=-
x-
-
=3
=4-
0.5x-0.5=4.3-17x
8(x-7)-9(x-1)=15
3x+5(12-x)=-6
(200+x)-
(400-x)=400×
16x-23=6x+27
9x=
x+16
5(6-x)=-5(x+3)
2(-4x-2)+3x=8
(x-2)-(8x+5)=-
-
=3
=1-
0.8x-0.1=5.9-18x
3(x-9)+9(x-5)=18
5x-2(11-x)=-4
(100+x)-
(400-x)=400×
12x-29=6x+28
5x=
x+12
5(5-x)=-3(x+1)
2(-2x-1)+3x=5
(x-4)-(4x+7)=-
x-
-
=2
y-
=2-
0.8x-0.5=2.2-24x
2(x-3)-2(x-5)=19
2x+2(19-x)=-4
(300+x)-
(600-x)=400×
16x-38=9x+23
3x=
x+12
2(3-x)=-5(x+6)
5(-4x-1)+4x=8
(x-10)-(5x+5)=-
x-
-
=4
=6-
0.7x-0.6=6.9-26x
7(x-3)+2(x-5)=15
4x+5(11-x)=-6
(300+x)-
(400-x)=100×
20x-23=3x+28
9x=
x+1
4(4-x)=-2(x+2)
5(-3x-3)+2x=7
(x-2)-(7x+1)=-3/2
-
=3
=1-
0.7x-0.1=3.6-22x
2(x-7)+2(x-8)=16
6x-3(20-x)=-8
(100+x)-
(400-x)=100×
17x-22=6x+16
9x=
x+13
4(3-x)=-2(x+5)
2(-2x-3)+2x=6
3/2(x-10)-(4x+10)=-
x-
-
=3
=3-
0.6x-0.6=3.5-27x
9(x-6)-2(x-6)=16
5x-5(14-x)=-4
(200+x)-
(500-x)=300×
15x-23=3x+19
3x=
x+11
4(6-x)=-3(x+9)
5(-3x-1)+4x=7
(x-8)-(9x+9)=-
x-
-
=2
y-
=1-
0.3x-0.2=4.1-27x
5(x-2)-2(x-9)=11
4x+4(17-x)=-6
(100+x)-
(600-x)=200×
10x-31=3x+21
2x=
x+12
3(5-x)=-2(x+8)
5(-4x-1)+4x=5
(x-4)-(8x+4)=-
x-
-
=4
y-
=2-
0.3x-0.9=1.8-22x
2(x-4)-9(x-1)=11
3x-3(17-x)=-5
(300+x)-
(600-x)=200×
14x-27=5x+17
9x=
x+11
5(6-x)=-4(x+3)
4(-3x-2)+3x=9
(x-4)-(9x+8)=-
-
=2
=3-
0.4x-0.4=5.4-19x
8(x-6)+5(x-8)=13