七年级数学下册整式的加减法计算题.docx
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七年级数学下册整式的加减法计算题
(5k2-8k)-(4k2+k+6)
(8a2+7a-3b)-(7a2-5a-9b)
8x2-(7x2+6x-4)-(2x-4)
2y2-(7x2+y)-(5x2+6y2)
3
(9x2+3xy-—x)+(x2-5xy+9x)
4
12
(—xy-9y2+1)+(x2+—xy-9y2+5)
33
75
(xy+—y+—)+(xy-x+8)
64
(5y+5x+6z2)+(7y-5x+5z2)
(9k2+4k)+(3k2-9k-1)
(9a2+2a+8b)-(6a2+6a+3b)
4x2-(2x2+6x-7)-(4x+1)
4y2-(3x2+y)+(x2+7y2)
2
(8x2-5xy-—x)+(8x2-6xy+x)
3
61
(—xy+8y2-5)+(x2-—xy-3y2+9)
58
14
(xy+—y-—)-(xy-x+8)
85
(5y+7x-7z2)+(4y-4x-5z2)
(2k2+7k)+(8k2+6k-1)
(7a2+2a-6b)+(a2-4a-7b)
3x2-(5x2+4x+8)-(3x+4)
4y2-(5x2+y)+(9x2+2y2)
1
(7x2+6xy-—x)+(3x2-6xy+4x)
3
71
(—xy+3y2-1)+(x2-—xy+3y2+7)
88
11
(xy+—y+—)-(xy+x+8)
65
(7y-3x+z2)-(7y-8x+4z2)
(8k2-8k)+(2k2-6k+1)
(a2-a-2b)-(2a2-3a-5b)
3x2-(3x2+9x+1)-(7x-6)
6y2+(3x2-y)+(6x2+6y2)
6
(x2-6xy+—x)+(6x2-8xy+x)
7
11
(—xy+y2-8)-(x2-—xy-7y2+4)
35
59
(xy+—y-—)+(xy+x-7)
48
(5y-6x-9z2)+(7y-7x-9z2)
(5k2-2k)+(k2-5k+4)
(a2+a+7b)-(9a2+3a-4b)
3x2+(5x2+9x+6)+(4x+3)
8y2-(x2-y)-(8x2+4y2)
7
(3x2-5xy+—x)+(9x2+3xy+7x)
6
71
(—xy-6y2+6)+(x2+—xy-9y2-1)
66
11
(xy-—y-—)+(xy+x-3)
56
(4y-4x+4z2)-(7y-5x-4z2)
(3k2-k)-(2k2-8k-1)
(a2+5a+3b)+(7a2+3a-9b)
7x2+(6x2-6x+8)-(3x-6)
8y2-(9x2+y)+(3x2-8y2)
1
(6x2-6xy-—x)+(2x2+4xy-4x)
5