七年级数学下册计算题大全15文档格式.docx
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73
(7y+2x+9z2)+(5y-5x-2z2)
(6k2-2k)-(5k2+8k-7)
(8a2-3a+7b)-(3a2-9a+3b)
7x2-(7x2+x-7)-(3x+3)
5y2+(3x2-y)-(4x2-8y2)
(x2-7xy-—x)-(5x2+9xy+3x)
6
(—xy+9y2+1)+(x2+—xy-6y2+1)
65
11
(xy-—y+—)-(xy-x-8)
47
(6y-3x+9z2)-(3y+2x+4z2)
(9k2-9k)+(9k2+3k+9)
(7a2-4a+b)+(2a2+8a+8b)
9x2-(6x2-6x-2)-(3x+6)
5y2+(5x2-y)-(8x2+7y2)
(2x2+xy-—x)+(2x2+6xy+8x)
5
19
(—xy+9y2-5)-(x2+—xy+9y2-5)
88
75
(xy+—y+—)+(xy-x-9)
66
(6y-3x+7z2)-(y+5x+9z2)
(k2-5k)-(7k2-7k-6)
(2a2-a-8b)-(6a2-4a-5b)
7x2+(2x2-7x+9)-(2x+3)
6y2+(5x2+y)+(9x2+8y2)
(x2+4xy-—x)-(7x2+xy-8x)
4
16
(—xy-9y2-4)-(x2+—xy-y2-2)
35
15
(xy+—y-—)-(xy+x-3)
54
(8y+3x-z2)-(6y-6x+4z2)
(4k2-9k)+(9k2+2k+7)
(8a2-5a-2b)+(6a2+7a-5b)
8x2-(8x2-4x-1)+(8x+4)
4y2+(4x2+y)+(8x2+8y2)
9
(x2-xy-—x)-(x2-8xy+8x)
8
17
(—xy-9y2-2)+(x2+—xy+4y2+8)
76
58
(xy-—y+—)+(xy+x-9)
(5y+6x+2z2)-(5y-2x+3z2)
(8k2+9k)+(4k2+5k+5)
(9a2+8a-2b)-(3a2+7a+4b)
2x2+(3x2+6x-5)+(3x-2)
3y2-(7x2+y)-(4x2+5y2)
(6x2-3xy+—x)-(x2+xy+3x)
14
(—xy+2y2-2)+(x2-—xy+4y2-6)
26
(xy-—y+—)+(xy+x+8)
35
(9y-9x-9z2)+(4y-9x+z2)
(3k2-7k)+(3k2-5k+1)
(6a2-9a+b)-(5a2-a+5b)
7x2-(8x2+7x-5)-(7x+8)
3y2+(8x2+y)-(8x2-4y2)
3
(x2-5xy+—x)+(6x2-4xy+5x)
69
(—xy-9y2+9)+(x2-—xy-9y2-3)
58
81
(xy-—y+—)+(xy-x+2)
(4y-2x-9z2)-(4y-2x+4z2)
(3k2+k)-(2k2+3k+5)
(8a2+5a+9b)-(5a2+a+b)
x2+(3x2+x+8)+(6x-3)
5y2-(8x2+y)-(8x2+9y2)
(8x2+8xy+—x)+(3x2+9xy+6x)
21
(—xy+4y2-4)+(x2-—xy+8y2-2)
71
(xy-—y-—)-(xy+x+8)
83
(9y-6x+7z2)+(8y+8x-2z2)
(4k2-k)+(2k2+2k-5)
(3a2-a+6b)-(4a2-8a+8b)
6x2+(4x2+6x+4)-(8x+6)
7y2+(4x2+y)-(7x2-4y2)
(8x2-4xy+—x)-(3x2-6xy+8x)
(—xy-4y2+6)+(x2+—xy-8y2+3)
45
41
(xy+—y-—)+(xy+x-4)
33
(9y-2x+9z2)-(4y-3x-8z2)
(9k2+2k)+(3k2+5k-3)
(7a2+5a+6b)+(4a2-4a+6b)
x2-(6x2-5x+7)-(3x+6)
4y2+(9x2+y)-(x2-2y2)
(6x2+7xy-—x)-(8x2-3xy-2x)
64
(—xy+6y2-5)-(x2+—xy+7y2+9)
55
12
(xy-—y-—)+(xy-x+1)
53
(2y+3x-4z2)-(9y-9x-9z2)
(3k2+k)+(2k2+8k-1)
(a2+4a-8b)+(9a2-4a+4b)
3x2+(8x2+5x+2)+(8x+6)
8y2+(3x2-y)-(8x2+4y2)
(2x2+xy+—x)+(9x2-9xy+6x)
(—xy-y2+6)-(x2-—xy-5y2-1)
(xy+—y+—)-(xy-x-3)
56
(3y-6x+3z2)+(4y-9x+4z2)
(3k2-5k)-(k2+6k-9)
(6a2+6a+2b)+(5a2+2a+9b)
8x2+(5x2-2x+8)-(8x+4)
3y2+(2x2+y)+(7x2-4y2)
(6x2+9xy-—x)-(3x2+6xy+x)
66
(—xy-2y2+1)+(x2-—xy+8y2+9)
68
(xy-—y-—)-(xy+x-2)
57
(8y+6x-3z2)+(y+x-8z2)
(2k2+2k)+(3k2-5k+1)
(a2-4a+2b)-(a2-2a-9b)
4x2+(5x2-8x-9)-(2x-5)
7y2-(8x2+y)+(x2-2y2)