七年级数学整式的加减法计算题大全 317文档格式.docx
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7x2-(6x2+9x-7)+(5x+3)
6y2-(7x2+y)-(9x2-8y2)
5
(4x2+4xy-—x)-(2x2-5xy+x)
4
61
(—xy-6y2+8)-(x2+—xy-4y2+5)
77
26
(xy-—y-—)-(xy-x+4)
35
(7y-9x-2z2)+(3y-9x+9z2)
(5m2+4m-1)-(5m-5n+9)
(9x2+7x+5)-9(7x2+x)
-7(x2-4)-8(x2+9)
-(x2y+5xy+2)-3(x2y+5xy-8)
18
(—x2-21x-11y)-(—x2+17x+19y)
-—(4k3-4k2-4)-—(5k3+8k2+5k)
23
(6k2+8k)+(3k2+8k+1)
(4a2-2a+7b)+(3a2+a-6b)
3x2-(5x2-5x-6)+(3x-7)
2y2-(2x2-y)-(8x2+9y2)
7
(6x2-6xy+—x)-(6x2-6xy+5x)
6
85
(—xy+y2-4)+(x2+—xy-2y2-9)
74
37
(xy+—y-—)-(xy-x-6)
48
(5y+x-4z2)+(2y-7x+4z2)
(2m2-3m-2)+(3m+3n-4)
(6x2-3x+1)+3(3x2+6x)
-7(x2+4)+5(x2+2)
-(x2y-2xy+4)+9(x2y-4xy+5)
(—x2-24x-14y)-(—x2-11x+23y)
66
-—(5k3+8k2+7)+—(4k3+8k2-7k)
42
(9k2-8k)+(5k2+7k-3)
(9a2+5a-4b)+(2a2-3a-6b)
x2-(x2-8x+3)+(6x+7)
9y2-(5x2+y)+(7x2+3y2)
(x2-8xy+—x)-(3x2+xy-x)
8
(—xy+3y2+7)+(x2+—xy+9y2-5)
36
68
(xy+—y+—)+(xy-x-1)
77
(7y+4x-3z2)-(y-9x-8z2)
(6m2-9m+8)-(4m+n-6)
(9x2-5x-9)+8(x2-5x)
-4(x2-4)+4(x2+5)
-(x2y+9xy-4)-3(x2y-4xy-3)
(—x2+12x+20y)-(—x2-12x-21y)
55
-—(9k3-4k2-6)-—(4k3+4k2+4k)
43
(9k2+6k)+(7k2-9k-8)
(a2+5a+9b)-(a2-8a-b)