七年级数学下册整式的加减法计算题 497.docx
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七年级数学下册整式的加减法计算题497
82
(—xy+y2-6)+(x2+—xy+2y2+1)
73
33
(xy-—y-—)+(xy-x-1)
44
(4y-x+7z2)+(8y+2x+2z2)
(2k2+4k)+(6k2-6k-3)
(a2+2a+7b)-(3a2-4a+4b)
4x2-(8x2+7x+5)-(2x+3)
7y2-(4x2+y)+(4x2+5y2)
2
(9x2+5xy+—x)+(6x2+7xy+2x)
3
56
(—xy+6y2+6)-(x2-—xy+3y2-2)
47
29
(xy-—y+—)-(xy-x+4)
38
(9y-8x+9z2)-(4y-7x-9z2)
(2k2-8k)+(9k2+9k-3)
(2a2+a+8b)+(8a2+4a+8b)
6x2-(5x2+5x+9)-(6x+2)
8y2-(6x2+y)+(9x2+4y2)
1
(7x2+xy-—x)+(x2+8xy+8x)
7
56
(—xy-2y2-1)+(x2+—xy+9y2-8)
45
43
(xy+—y+—)+(xy-x-3)
34
(4y+x+8z2)+(5y-5x+4z2)
(8k2+3k)+(8k2+9k-1)
(8a2+9a-8b)-(9a2-5a-5b)
3x2-(9x2+6x-5)-(5x-8)
4y2-(5x2-y)+(6x2+y2)
2
(5x2-4xy+—x)+(6x2+8xy-9x)
3
11
(—xy+2y2+4)-(x2+—xy+3y2+6)
43
11
(xy-—y+—)-(xy+x-8)
84
(5y+3x+9z2)+(y-9x-3z2)
(5k2-8k)-(9k2+7k+4)
(6a2+a-6b)-(4a2-2a+4b)
8x2+(9x2-8x+1)+(9x-3)
y2-(x2+y)+(x2-7y2)
5
(x2+3xy-—x)-(4x2-9xy-2x)
4
41
(—xy-6y2-3)-(x2-—xy-3y2+9)
58
11
(xy-—y-—)+(xy+x+8)
53
(3y+9x-6z2)-(3y+4x+z2)
(3k2-9k)+(4k2-3k+6)
(2a2-8a-9b)+(2a2+4a+b)
8x2+(3x2-8x+7)+(7x-7)
2y2+(5x2+y)-(8x2-8y2)
2
(3x2-xy-—x)-(9x2+5xy+6x)
3
28
(—xy-9y2+1)-(x2-—xy-9y2+5)
37
61
(xy-—y+—)-(xy+x-3)
54
(7y-6x+3z2)+(8y+x-7z2)
(9k2+7k)+(k2-6k-4)
(9a2-7a+5b)+(7a2+9a+7b)