七年级数学下册整式的加减法计算题 827Word文档下载推荐.docx
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1
(5x2+8xy+—x)+(2x2-xy+9x)
8
85
(—xy+9y2-3)+(x2+—xy-8y2+4)
74
11
(xy+—y-—)+(xy+x+1)
66
(7y+5x-2z2)+(6y-9x-8z2)
(6k2-k)-(2k2-9k-2)
(5a2-2a-3b)-(8a2-7a+4b)
5x2-(3x2-x-5)-(5x-1)
3y2-(3x2+y)+(2x2+2y2)
(2x2-4xy-—x)-(8x2+5xy-x)
4
11
(—xy+9y2+5)+(x2+—xy-6y2+1)
44
61
(xy-—y+—)-(xy+x+4)
77
(9y+5x+2z2)+(7y-3x+3z2)
(6k2+9k)+(k2+7k-5)
(4a2+3a-9b)-(a2+5a-2b)
7x2-(2x2-8x-8)+(8x-7)
7y2-(5x2+y)-(4x2-3y2)
(9x2-3xy-—x)-(6x2-9xy+6x)
6
16
(—xy+5y2-7)-(x2+—xy+2y2-3)
75
18
(xy+—y+—)-(xy-x-7)
87
(2y-3x-9z2)-(4y-9x-6z2)
(9k2+7k)-(9k2-9k+5)
(3a2-6a-b)+(3a2+5a-7b)
9x2-(6x2+9x-6)-(8x-2)
8y2+(7x2-y)-(5x2+8y2)
(8x2+4xy+—x)+(x2-5xy+x)
3
31
(—xy-9y2+8)+(x2+—xy-5y2-1)
46
14
(xy-—y+—)-(xy-x-1)
83
(2y-8x+4z2)-(2y+5x-6z2)
(6k2-7k)+(4k2-k+8)
(a2+4a-6b)-(3a2-2a-5b)
9x2+(5x2+7x+7)+(3x-5)
4y2-(x2+y)+(x2+2y2)
(3x2-5xy+—x)-(7x2-4xy+2x)
59
(—xy-9y2+1)-(x2-—xy+5y2+2)
48
(xy+—y+—)+(xy+x+3)
86
(8y+6x-8z2)+(3y+8x-2z2)
(8k2-5k)-(6k2-7k-3)
(5a2+3a+b)+(7a2-8a+7b)
5x2+(9x2-9x+8)-(9x-9)
7y2-(6x2-y)-(4x2+5y2)