七年级数学下册整式的加减法练习题精选强烈推荐 203.docx
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七年级数学下册整式的加减法练习题精选强烈推荐203
(9y+8x-2z2)-(y-3x+6z2)
(7m2+3m-3)-(2m-3n-2)
(4x2-6x-8)-3(4x2-5x)
-4(x2+5)-7(x2-4)
-(x2y-8xy-9)-4(x2y-4xy+6)
51
(—x2-16x-20y)-(—x2-14x+24y)
66
11
-—(9k3-5k2-2)-—(8k3+7k2-4k)
42
(8k2+5k)+(9k2+4k+4)
(7a2-a+9b)+(2a2+2a+2b)
6x2+(8x2+x+5)-(5x+8)
4y2-(8x2-y)+(x2-2y2)
1
(8x2-xy-—x)+(5x2+3xy-4x)
6
31
(—xy-6y2-4)+(x2-—xy-4y2-1)
44
18
(xy+—y-—)+(xy+x+6)
77
(7y+2x+8z2)+(7y+4x-7z2)
(m2+m-9)-(8m-n-8)
(5x2-8x-7)+3(7x2-x)
-9(x2-8)+3(x2-1)
-(x2y-6xy+7)+2(x2y+5xy+7)
71
(—x2-18x-18y)-(—x2-11x+12y)
88
11
-—(7k3+4k2-7)-—(2k3+2k2+2k)
26
(8k2-4k)-(3k2-6k-8)
(5a2+3a+6b)+(a2-8a+9b)
7x2+(4x2+7x-5)+(4x+6)
7y2+(3x2+y)+(3x2+y2)
1
(8x2+7xy+—x)-(7x2+xy+8x)
5
37
(—xy-2y2-5)-(x2+—xy+2y2-6)
48
41
(xy+—y+—)+(xy-x-4)
33
(5y-2x-3z2)-(7y-8x-8z2)
(7m2-8m+2)+(5m+5n+8)
(8x2-5x-6)+4(8x2-2x)
-5(x2+9)+8(x2+6)
-(x2y-2xy-9)+8(x2y-4xy-3)
13
(—x2+30x-13y)+(—x2+15x-27y)
44
11
-—(8k3+2k2-3)-—(2k3+5k2+4k)
22
(5k2-8k)+(6k2-2k+5)
(6a2-9a+7b)-(a2+a-7b)
8x2-(7x2+4x+1)+(7x-8)
6y2-(3x2+y)-(5x2-8y2)
9
(8x2+xy+—x)+(8x2-9xy-2x)
8
15
(—xy-5y2-8)-(x2+—xy+5y2-2)
76
75
(xy-—y+—)-(xy-x+3)
66
(3y+8x+4z2)+(8y+8x-7z2)
(7m2-4m+7)-(5m+5n-3)
(6x2-2x-5)+8(8x2-x)