七年级数学下册整式的加减法练习题精选强烈推荐 179.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179
73
(—xy-5y2+2)+(x2-—xy+4y2+7)
84
17
(xy-—y-—)+(xy-x-1)
76
(5y-9x+3z2)-(6y+9x+2z2)
(4m2-4m+8)+(2m-n-7)
(9x2+3x+1)+6(2x2+4x)
-3(x2+6)+6(x2-2)
-(x2y+3xy+4)+9(x2y-4xy+6)
31
(—x2-28x-19y)+(—x2+20x+28y)
44
11
-—(8k3-6k2+9)-—(5k3-9k2-4k)
62
(k2-9k)+(2k2+7k-2)
(3a2+6a-8b)-(4a2+2a-6b)
5x2+(8x2+6x+7)+(6x-1)
2y2-(5x2-y)-(2x2-7y2)
4
(9x2-4xy-—x)-(4x2-9xy+x)
3
55
(—xy-8y2-2)+(x2+—xy-7y2-6)
46
31
(xy+—y+—)+(xy-x-3)
45
(y+8x+7z2)+(y+5x+8z2)
(2m2-8m-3)-(6m+7n+6)
(4x2+2x-6)-8(6x2+2x)
-4(x2+1)-7(x2-7)
-(x2y+9xy+7)+2(x2y+6xy-5)
11
(—x2+16x+13y)-(—x2+18x+28y)
88
11
-—(6k3-9k2+6)-—(9k3+8k2+3k)
43
(6k2+8k)+(3k2-k+7)
(2a2+5a+8b)-(9a2+9a-4b)
4x2+(8x2-9x+4)+(6x+8)
6y2+(3x2-y)-(2x2-y2)
1
(x2+6xy-—x)+(x2-7xy-3x)
6
16
(—xy-5y2-8)+(x2-—xy-5y2-3)
47
71
(xy+—y+—)-(xy+x+6)
66
(3y+8x+8z2)+(y+6x+7z2)
(m2+3m-5)+(2m-6n+6)
(4x2+x+6)-9(9x2-5x)
-4(x2-9)-5(x2+2)
-(x2y+5xy-4)-3(x2y+6xy+6)
71
(—x2-25x+11y)-(—x2-10x+14y)
66
11
-—(8k3+3k2+6)-—(9k3-2k2+3k)
42
(5k2+k)-(3k2-8k+4)
(5a2-6a+5b)-(3a2-a-7b)
5x2+(6x2-8x+4)-(6x+9)
2y2-(2x2+y)-(5x2-8y2)
1
(7x2+6xy+—x)-(x2-9xy-3x)
4
81
(—xy+3y2+6)+(x2+—xy+2y2-7)
78
11
(xy-—y-—)-(xy-x+9)
33
(6y-3x-6z2)-(7y-5x+3z2)