七年级数学下册整式的加减法计算题 730.docx
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七年级数学下册整式的加减法计算题730
7x2-(5x2+8x+7)+(9x-3)
8y2-(6x2+y)+(2x2+y2)
1
(3x2+2xy-—x)-(x2+7xy-5x)
4
18
(—xy+7y2+5)+(x2+—xy+5y2-8)
47
11
(xy+—y+—)+(xy+x+5)
76
(3y-5x+z2)-(9y+2x+2z2)
(5k2+6k)+(9k2+k+9)
(4a2+3a-4b)-(6a2+4a-b)
4x2+(6x2+3x+2)-(8x-1)
5y2+(5x2-y)-(8x2-y2)
3
(x2-8xy-—x)-(6x2+2xy-x)
4
51
(—xy+y2+1)-(x2+—xy-6y2+4)
64
61
(xy-—y+—)+(xy-x-1)
76
(y-7x+7z2)-(3y-2x-2z2)
(7k2+5k)+(k2+3k+4)
(6a2-4a-3b)-(2a2-4a+3b)
4x2+(4x2+x-5)+(7x-5)
9y2+(7x2-y)+(6x2-y2)
1
(8x2+4xy-—x)+(8x2-2xy+8x)
6
31
(—xy-3y2+9)+(x2-—xy-6y2+4)
45
71
(xy+—y-—)+(xy+x+5)
83
(2y-4x+2z2)-(5y+9x+4z2)
(3k2+2k)+(9k2+7k-5)
(5a2+7a+b)+(7a2+8a-b)
6x2+(6x2+x-9)-(6x-4)
7y2+(9x2+y)+(6x2-5y2)
1
(3x2+6xy-—x)-(7x2-3xy-9x)
8
82
(—xy-2y2+1)-(x2-—xy-8y2-9)
73
11
(xy-—y+—)+(xy+x+5)
68
(2y-6x+7z2)-(9y+x+2z2)
(4k2+7k)-(9k2-k-5)
(7a2-7a+4b)+(3a2-a+3b)
6x2+(8x2-6x-6)-(7x-9)
9y2+(7x2-y)+(2x2-7y2)
1
(5x2-6xy-—x)+(6x2-9xy-9x)
6
69
(—xy+6y2+6)-(x2+—xy+2y2+2)
58
98
(xy-—y+—)-(xy+x+8)
87
(y-x+7z2)+(4y-9x-9z2)
(4k2-5k)+(9k2+4k-8)
(4a2+8a+5b)+(9a2-9a+8b)
9x2-(5x2-7x-1)+(5x-6)
7y2+(8x2+y)-(4x2+4y2)
1
(2x2+8xy+—x)+(3x2-2xy+8x)
8
44
(—xy-5y2+5)+(x2-—xy+6y2-6)
35
47
(xy+—y-—)+(xy-x-9)
38