七年级数学下册整式的加减法计算题 75文档格式.docx
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4y2-(3x2-y)-(3x2+8y2)
6
(6x2-6xy+—x)-(x2-3xy+2x)
7
67
(—xy-5y2-3)-(x2+—xy+4y2-1)
78
16
(xy+—y+—)+(xy+x-8)
77
(y+5x+3z2)-(8y-9x-7z2)
(6k2+k)+(3k2-k+3)
(a2-5a-9b)+(2a2+8a-4b)
3x2+(6x2-5x+2)+(8x+1)
6y2+(7x2+y)+(9x2-5y2)
1
(2x2-9xy-—x)+(x2+3xy-9x)
66
(—xy-9y2-2)+(x2-—xy-9y2+4)
77
64
(xy+—y-—)-(xy+x-2)
75
(3y-5x+7z2)+(4y-8x+3z2)
(6k2+5k)-(9k2+3k-8)
(6a2+3a+3b)+(a2+3a+8b)
8x2-(2x2-4x-3)-(3x-1)
5y2-(3x2+y)-(7x2-3y2)
(x2+4xy+—x)-(2x2-8xy-2x)
5
11
(—xy-7y2+1)-(x2-—xy+3y2+2)
37
11
(xy+—y+—)-(xy-x+9)
58
(6y-x+9z2)+(8y+3x+6z2)
(8k2-3k)+(7k2-8k+4)
(8a2-2a-4b)-(2a2-5a-9b)
8x2-(6x2-7x-1)+(4x-6)
6y2+(6x2+y)-(7x2+8y2)
(6x2+xy-—x)-(9x2-xy-2x)
53
(—xy-5y2+2)+(x2+—xy-8y2-6)
64
(xy+—y+—)-(xy+x+9)
(4y-3x+2z2)-(y+6x+7z2)
(5k2-6k)-(k2-5k+8)
(6a2+3a-b)+(7a2+5a-2b)
3x2-(7x2-3x-2)+(7x+9)
y2+(9x2-y)-(7x2-5y2)
(6x2-4xy-—x)+(4x2-7xy-8x)
54
(—xy-6y2+1)-(x2-—xy+3y2-3)
63
61
(xy-—y-—)-(xy-x+4)
57
(8y-7x-9z2)+(4y-7x-7z2)
(6k2-k)-(2k2-2k+1)
(3a2-4a-7b)-(7a2-9a+2b)
3x2+(6x2+2x+1)+(2x+1)
2y2+(7x2-y)-(2x2-8y2)