七年级数学下册整式的加减法计算题 58Word格式文档下载.docx
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71
(—xy+y2-6)-(x2+—xy+3y2+4)
63
65
(xy-—y-—)+(xy-x+2)
74
(4y-7x-6z2)-(4y+7x-8z2)
(9k2+8k)-(k2+k-5)
(9a2+8a-7b)+(6a2+3a-8b)
4x2-(x2+5x+3)-(2x+2)
7y2+(7x2-y)+(5x2+9y2)
(4x2-8xy-—x)+(7x2+9xy-8x)
11
(—xy+3y2+8)+(x2+—xy+8y2-6)
55
14
(xy-—y-—)-(xy-x+9)
63
(2y+x-3z2)-(3y+7x-9z2)
(5k2+8k)+(3k2+4k-4)
(3a2+9a-b)+(a2+4a+6b)
5x2-(7x2-2x+1)-(5x-1)
8y2-(3x2+y)-(9x2-5y2)
(4x2+6xy+—x)+(x2-9xy+x)
7
(—xy+9y2-4)-(x2-—xy-7y2+5)
66
41
(xy+—y+—)+(xy-x-7)
34
(8y-9x+6z2)-(6y-x+3z2)
(4k2+k)+(6k2-5k-5)
(4a2-8a+b)+(3a2-4a-3b)
4x2+(9x2+7x+1)-(5x-6)
4y2-(x2-y)+(2x2-y2)
(9x2+4xy+—x)-(6x2+4xy+6x)
41
(—xy+9y2-8)+(x2-—xy+2y2-5)
37
44
(xy+—y-—)+(xy+x-5)
53
(5y-5x-8z2)+(4y-8x+4z2)
(7k2-2k)-(4k2+3k-9)
(6a2+6a-6b)-(8a2+3a-7b)
6x2+(8x2-2x-6)+(4x-2)
9y2+(6x2+y)-(3x2-6y2)
4
(7x2+4xy-—x)+(x2+3xy-x)
36
(—xy-3y2+8)-(x2+—xy-2y2-1)
47
11
(xy-—y-—)+(xy-x+8)
77
(5y+9x-4z2)+(6y-5x+4z2)
(k2-5k)+(4k2-3k-9)
(2a2-4a+8b)-(6a2+5a-9b)
7x2+(9x2+3x-8)+(3x-2)
8y2-(2x2-y)+(6x2+5y2)
(9x2-7xy+—x)+(8x2+5xy-2x)
5
(—xy+6y2-4)+(x2-—xy+7y2-3)
88
55
(xy+—y-—)-(xy+x-9)