七年级数学下册计算题3Word文件下载.docx
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x2-(5x2+2x-2)-(4x+5)
4y2-(3x2+y)+(6x2-5y2)
1
(7x2+4xy-—x)-(2x2-2xy-5x)
3
44
(—xy-4y2-6)+(x2-—xy-6y2+3)
35
45
(xy+—y+—)-(xy+x+8)
56
(3y+5x-3z2)-(9y-6x-9z2)
(2k2+4k)+(4k2-2k-2)
(2a2-4a-b)+(2a2+6a+2b)
3x2-(9x2+3x-3)+(8x+4)
8y2-(8x2+y)-(9x2+4y2)
(2x2-2xy-—x)+(7x2+7xy-9x)
6
24
(—xy+6y2-7)+(x2+—xy+y2-4)
51
(xy+—y+—)+(xy-x+6)
(2y-5x-7z2)-(2y-6x-9z2)
(8k2+4k)+(2k2-7k-4)
(3a2+8a+9b)-(3a2+a+9b)
6x2-(9x2+9x+8)-(8x-3)
9y2+(7x2-y)+(2x2+7y2)
2
(5x2-xy-—x)+(2x2+2xy+8x)
74
(—xy-y2+9)+(x2+—xy-6y2-3)
83
81
(xy+—y+—)+(xy-x-4)
77
(5y+4x-3z2)-(3y-3x+7z2)
(9k2-9k)-(5k2+7k-3)
(6a2+a-8b)-(7a2-4a+2b)
x2+(8x2+9x-1)+(3x-4)
8y2-(4x2-y)+(5x2-y2)
5
(2x2+5xy-—x)+(8x2-xy+x)
16
(—xy-y2-6)-(x2+—xy-6y2+8)
47
76
(xy+—y+—)+(xy-x+2)
85
(6y-2x-4z2)-(7y-2x+7z2)
(4k2-8k)+(6k2+9k+2)
(9a2-2a-6b)+(7a2+6a+3b)
8x2+(5x2-7x+8)-(2x+2)
2y2-(8x2-y)+(x2+3y2)
(2x2-2xy-—x)-(x2+xy+6x)
4
68
(—xy+6y2-7)+(x2-—xy+4y2-4)
77
11
(xy-—y+—)-(xy+x+5)
55
(9y-6x+2z2)+(4y-x+3z2)
(5k2+7k)+(6k2+3k-3)
(a2+5a+5b)+(8a2+7a+2b)
6x2+(6x2+7x-4)+(7x-6)
y2-(5x2-y)+(6x2-y2)
(7x2+7xy-—x)+(x2-3xy+6x)
(—xy-6y2-2)-(x2+—xy-8y2+1)
85
16
(xy-—y-—)+(xy-x+3)
87
(4y+9x+2z2)-(7y-8x+8z2)
(8k2+7k)+(3k2+5k+7)
(3a2-9a-3b)+(9a2-9a-6b)
3x2-(7x2+2x-9)+(3x+4)
7y2+(8x2+y)+(8x2-3y2)
(4x2+4xy-—x)+(7x2+9xy-7x)
41
(—xy-8y2-5)+(x2+—xy+2y2+9)
34
83
(xy-—y-—)+(xy+x+9)
74
(y+3x-6z2)+(8y-5x+9z2)
(3k2-7k)-(7k2-8k-7)
(2a2+5a-3b)+(6a2+9a-3b)
5x2-(9x2+5x-8)+(x+9)
2y2+(7x2+y)+(5x2+5y2)
(8x2+2xy+—x)+(x2-6xy+8x)
71
(—xy+6y2+7)+(x2-—xy-y2+5)
66
33
(xy-—y-—)-(xy-x+5)
44
(4y+5x-6z2)+(3y+4x+7z2)
(k2-7k)-(5k2+8k-1)
(7a2-8a+3b)+(2a2-a+b)
4x2+(2x2-5x+5)+(6x+9)
2y2-(6x2+y)-(x2+5y2)
(7x2-3xy+—x)-(5x2-5xy-6x)
14
(—xy+y2+4)-(x2+—xy+2y2-6)
55
98
(xy+—y-—)-(xy-x+4)
(y-x-3z2)-(3y-3x+6z2)
(4k2-k)+(3k2+8k+8)
(5a2+a+3b)-(7a2-7a-7b)
2x2-(2x2+2x+2)+(3x+9)
7y2-(7x2-y)+(2x2-6y2)
(4x2+xy-—x)-(3x2+4xy-8x)
(—xy+7y2+6)+(x2+—xy-6y2+9)
73
(y-7x-z2)-(7y-4x+3z2)
(k2+k)-(4k2-k+2)
(8a2+6a-b)-(7a2-5a+4b)
6x2+(2x2-2x-1)-(7x-9)
5y2+(5x2+y)-(x2-6y2)
(8x2-2xy-—x)-(4x2+9xy+4x)
15
(—xy+8y2+7)-(x2-—xy+7y2+7)
64
(xy+—y+—)-(xy+x-2)
67
(2y-7x-5z2)+(2y+3x-7z2)
(6k2-7k)-(8k2+8k+1)
(3a2-2a-2b)+(8a2+3a+2b)
3x2-(9x2-2x-9)+(3x+2)
5y2-(x2+y)-(9x2-5y2)
(9x2+9xy+—x)-(4x2-xy+8x)
(—xy-6y2+4)+(x2+—xy+6y2-4)
97
(xy-—y-—)+(xy+x-6)
86
(7y+8x+z2)+(y-6x+3z2)
(3k2-8k)-(k2+7k+2)
(5a2-2a-8b)-(5a2+4a+7b)
5x2+(7x2+6x-1)+(3x+4)
9y2-(8x2+y)+(5x2+9y2)
(4x2+xy+—x)-(9x2-6xy+x)
75
(—xy+8y2-2)-(x2+—xy-7y2+6)
84
(xy-—y+—)+(xy-x+3)
37
(7y-3x+4z2)+(7y+2x+8z2)
(7k2-k)+(4k2-k-1)
(9a2+8a+5b)+(8a2-a-2b)
x2+(9x2-5x-7)+(4x-6)
6y2-(4x2-y)-(9x2-7y2)
(3x2-9xy+—x)+(7x2+8xy+x)
91
(—xy-5y2-2)-(x2-—xy+7y2-5)
(xy-—y+—)+(xy+x+7)
(5y+6x-9z2)+(9y+7x+3z2)
(k2+k)+(k2+5k+9)
(2a2+5a+7b)+(4a2+7a-4b)
x2+(2x2+x+1)+(2x+8)
4y2-(6x2+y)+(7x2-7y2)
(3x2-3xy+—x)-(3x2+2xy+x)
95
(—xy-6y2-5)-(x2+—xy+4y2+5)
(x