七年级数学下册整式的加减法计算题 109.docx
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七年级数学下册整式的加减法计算题109
(7a2+a-8b)+(6a2-8a-9b)
2x2+(6x2+2x+2)+(5x-7)
9y2-(4x2-y)+(7x2-4y2)
1
(5x2+7xy+—x)-(6x2+6xy+9x)
6
21
(—xy+2y2-5)+(x2+—xy-2y2+4)
35
41
(xy-—y-—)-(xy+x+9)
33
(y-4x-4z2)+(4y-5x+7z2)
(5k2+4k)+(7k2-2k-8)
(4a2+2a-8b)+(9a2-8a+6b)
3x2+(2x2+6x-5)-(9x+6)
5y2-(x2-y)+(3x2-7y2)
7
(8x2-4xy+—x)+(8x2+5xy-3x)
6
66
(—xy+2y2-5)+(x2-—xy-4y2+2)
77
64
(xy-—y-—)+(xy+x+5)
73
(2y-7x-2z2)+(y+8x+7z2)
(7k2+5k)+(5k2-9k+1)
(9a2+3a+9b)+(a2-8a-b)
5x2-(2x2+5x-4)-(5x-9)
7y2+(9x2-y)-(6x2-6y2)
7
(4x2+5xy+—x)+(5x2+7xy+2x)
8
43
(—xy+9y2+3)+(x2+—xy+7y2-2)
54
11
(xy-—y+—)+(xy-x+9)
44
(y-5x-3z2)+(9y+x-z2)
(4k2-7k)+(4k2+8k+6)
(a2-6a+7b)+(8a2-a+2b)
8x2-(3x2-x-1)+(x+3)
5y2+(6x2-y)+(7x2-3y2)
1
(6x2-9xy+—x)+(7x2+5xy-4x)
7
61
(—xy-2y2-8)+(x2-—xy+9y2-4)
55
14
(xy-—y+—)+(xy+x+6)
73
(2y-x+9z2)+(8y+5x-8z2)
(7k2-2k)+(9k2+9k-1)
(4a2-9a+4b)+(2a2+9a-8b)
3x2-(4x2+x+2)+(7x+6)
5y2+(9x2-y)+(4x2+y2)
1
(3x2+5xy+—x)-(2x2+8xy+2x)
3
94
(—xy+5y2-3)+(x2+—xy-2y2+7)
85
11
(xy+—y+—)-(xy-x+8)
76
(7y-4x+8z2)+(3y-7x+2z2)
(7k2-k)-(8k2-7k-7)
(8a2-2a-5b)-(3a2+7a+2b)
3x2+(7x2+3x-6)-(3x+3)
5y2+(x2+y)+(5x2+4y2)
1
(5x2-8xy+—x)+(7x2-5xy-3x)
7
11
(—xy+9y2+1)-(x2+—xy+3y2-1)
47