七年级数学下册整式的加减法计算题 625Word格式文档下载.docx
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87
(4y-2x-3z2)+(7y-2x-z2)
(8k2-5k)+(k2-k+9)
(5a2+8a-5b)-(9a2-5a-3b)
4x2+(6x2-9x-1)-(2x+5)
y2+(8x2-y)+(2x2+5y2)
1
(7x2-8xy+—x)+(4x2+5xy+7x)
5
51
(—xy+6y2-9)+(x2+—xy+4y2-4)
44
43
(xy-—y-—)-(xy+x-8)
54
(7y+x+2z2)-(2y+9x-6z2)
(3k2-2k)+(k2-5k+5)
(5a2+6a+3b)+(4a2+2a-8b)
3x2-(7x2+9x+5)+(9x-7)
5y2+(x2-y)-(x2+2y2)
(7x2-9xy-—x)-(x2-2xy+6x)
3
11
(—xy-4y2+8)+(x2+—xy+2y2+3)
47
85
(xy-—y+—)-(xy+x+2)
74
(3y-6x+6z2)+(2y+7x+8z2)
(7k2-5k)+(5k2-k+8)
(5a2-8a-2b)-(9a2+9a-7b)
x2+(5x2+6x-7)-(4x-7)
5y2+(4x2-y)+(3x2-y2)
7
(8x2+4xy+—x)-(5x2-4xy-4x)
8
43
(—xy-3y2-6)-(x2-—xy+2y2+2)
11
(xy+—y-—)+(xy-x-8)
(9y+8x-6z2)+(9y+3x+3z2)
(k2+7k)-(5k2+7k-7)
(8a2-7a+6b)+(9a2-9a+3b)
5x2-(8x2+3x-4)-(4x-2)
y2-(4x2-y)+(5x2+3y2)
(6x2+3xy+—x)+(8x2+6xy-8x)
6
78
(—xy-y2-2)-(x2+—xy+4y2+8)
87
(xy-—y-—)-(xy+x-6)
56
(4y-6x-7z2)-(2y-9x+z2)
(3k2-2k)+(2k2-6k+7)
(a2+7a-5b)-(a2+4a-4b)
7x2+(8x2+3x-2)-(5x-3)
6y2-(5x2-y)-(6x2+5y2)
(6x2+3xy-—x)-(3x2-4xy+5x)
71
(—xy+9y2+4)+(x2+—xy-7y2-1)
83
61
(xy+—y+—)+(xy-x+2)
(y-9x+2z2)+(5y-2x+6z2)
(6k2-8k)+(k2-8k-4)
(6a2-6a-3b)-(a2-3a-8b)