七年级数学下册整式的加减法计算题 757.docx
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七年级数学下册整式的加减法计算题757
(9a2-3a+b)-(4a2-2a-8b)
6x2+(2x2-5x-9)+(3x-2)
8y2-(x2+y)-(6x2-4y2)
1
(6x2-9xy-—x)+(x2-8xy-x)
4
11
(—xy-9y2-2)-(x2+—xy+8y2+8)
38
47
(xy+—y+—)-(xy-x+5)
56
(3y+4x+7z2)-(5y-3x-6z2)
(k2-8k)+(7k2+4k+2)
(6a2+4a+5b)+(7a2+4a-3b)
5x2-(6x2-5x+2)-(x-1)
3y2-(x2+y)-(x2-7y2)
1
(7x2+2xy-—x)+(7x2+6xy+8x)
8
97
(—xy+2y2-3)-(x2+—xy-3y2+8)
86
41
(xy-—y+—)-(xy-x-4)
56
(8y+5x+6z2)-(9y+9x-3z2)
(3k2+2k)+(4k2+9k-8)
(9a2-7a-8b)-(a2-8a+5b)
8x2+(7x2-6x+3)+(7x-1)
5y2-(x2-y)-(5x2-2y2)
1
(4x2+2xy+—x)-(3x2+7xy-6x)
5
41
(—xy+4y2+2)+(x2+—xy+5y2-4)
57
75
(xy-—y+—)+(xy+x-3)
84
(7y+2x+4z2)-(8y-5x-3z2)
(8k2-7k)-(k2+5k-6)
(5a2+3a+8b)-(2a2-2a+6b)
7x2-(5x2+8x+5)+(5x-8)
5y2+(x2+y)-(6x2-9y2)
1
(x2-8xy-—x)+(9x2+5xy-9x)
5
61
(—xy+9y2-4)+(x2-—xy-y2+3)
73
11
(xy+—y-—)-(xy+x+2)
63
(6y-9x-9z2)+(9y+5x+6z2)
(k2+9k)+(5k2-8k-6)
(3a2-9a-6b)-(9a2-9a-6b)
6x2+(2x2+2x-9)-(2x-3)
4y2+(2x2-y)+(6x2+y2)
7
(2x2-5xy-—x)+(4x2-7xy+4x)
8
17
(—xy-7y2-3)+(x2-—xy+y2+4)
88
81
(xy+—y+—)+(xy+x-4)
78
(y-8x+z2)-(7y+2x+4z2)
(k2+9k)+(6k2+5k-1)
(2a2-4a-6b)-(a2+2a+2b)
8x2-(7x2-9x-7)+(x-7)
4y2+(2x2-y)-(8x2+6y2)
1
(7x2-7xy+—x)+(4x2-8xy+3x)
4
71
(—xy-7y2+2)-(x2-—xy+9y2+1)
66