七年级数学下册计算题大全45Word下载.docx
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七年级数学下册计算题大全45Word下载.docx
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36
(3y-4x+9z2)-(3y-6x-4z2)
(5k2+6k)+(8k2-2k+6)
(4a2-2a+2b)+(5a2+2a-2b)
9x2+(4x2-5x-3)-(6x-5)
4y2-(3x2-y)+(5x2+4y2)
7
(4x2-4xy+—x)+(2x2-8xy-3x)
8
31
(—xy+6y2-4)-(x2+—xy+8y2-5)
48
11
(xy-—y+—)-(xy+x-2)
53
(2y-x-8z2)-(6y+4x+8z2)
(3k2-9k)+(4k2-7k-4)
(8a2+a+3b)-(3a2+3a+8b)
5x2-(5x2+3x+4)+(3x+4)
8y2+(7x2-y)-(4x2-6y2)
(6x2+9xy-—x)+(7x2+2xy+3x)
96
(—xy-2y2-5)-(x2-—xy+2y2-5)
87
71
(xy+—y-—)-(xy+x+1)
88
(2y-7x+5z2)+(y+6x+3z2)
(4k2+7k)+(7k2-5k-7)
(7a2-a+2b)-(8a2+6a-7b)
7x2+(7x2+5x+8)+(5x-8)
2y2+(2x2+y)+(7x2+y2)
(3x2+7xy-—x)-(2x2-7xy-2x)
(—xy+4y2-6)+(x2+—xy-8y2-4)
67
(xy+—y+—)-(xy+x-8)
84
(2y-6x-z2)+(2y+7x-2z2)
(3k2+9k)+(6k2+3k+1)
(a2+a-9b)+(7a2-8a-6b)
7x2+(9x2-9x+1)-(3x+9)
5y2+(4x2+y)+(4x2-9y2)
2
(2x2+8xy+—x)+(8x2+2xy+2x)
3
35
(—xy-8y2+2)+(x2-—xy+7y2-1)
46
(xy+—y+—)-(xy-x+7)
64
(5y-7x+7z2)-(3y+4x-3z2)
(2k2-2k)-(7k2-9k-4)
(5a2-8a-8b)+(3a2+7a+b)
x2-(5x2-7x-9)+(3x+8)
6y2-(2x2+y)-(3x2-9y2)
(5x2+6xy+—x)-(6x2+4xy+6x)
5
12
(—xy+4y2+8)+(x2-—xy+7y2-5)
33
16
(xy+—y+—)+(xy-x-7)
67
(6y+8x+2z2)+(4y-5x-3z2)
(5k2+2k)-(8k2+2k+2)
(7a2+5a+8b)-(a2+3a+6b)
2x2+(9x2+4x+4)-(6x-7)
8y2-(4x2-y)-(6x2-9y2)
(8x2+9xy+—x)-(2x2+6xy+2x)
71
(—xy-5y2-9)+(x2+—xy-7y2+4)
12
(xy-—y-—)-(xy-x+2)
33
(8y+5x+3z2)+(9y+5x-8z2)
(3k2+6k)+(2k2+6k+8)
(2a2-3a-7b)-(5a2+2a+9b)
7x2+(4x2+3x-9)-(6x+4)
5y2+(7x2-y)+(7x2-3y2)
4
(2x2+5xy+—x)-(7x2-2xy+9x)
(—xy+8y2-1)-(x2-—xy-5y2+5)
55
(xy+—y+—)+(xy-x+6)
65
(5y-8x+2z2)+(5y-2x+8z2)
(3k2+6k)+(4k2+8k-9)
(2a2-5a+9b)-(2a2+2a-b)
x2+(4x2-3x+3)+(x-9)
2y2-(2x2+y)+(4x2+y2)
(6x2-5xy+—x)+(x2+5xy+9x)
57
(—xy+5y2+8)+(x2+—xy+8y2+9)
74
(xy-—y+—)+(xy-x-7)
85
(7y+5x+5z2)+(2y+7x+6z2)
(9k2+6k)-(2k2-5k+1)
(6a2-8a+6b)-(3a2+8a-7b)
7x2-(8x2-3x-7)-(5x-8)
5y2+(7x2-y)-(8x2+y2)
(x2+4xy-—x)-(3x2+4xy+8x)
(—xy-2y2+5)+(x2-—xy+9y2-7)
(xy+—y-—)+(xy+x-5)
68
(y-7x-8z2)+(y-5x+7z2)
(4k2-8k)-(6k2+9k+4)
(4a2-4a+6b)+(3a2+7a-8b)
4x2+(x2-8x-1)+(6x-5)
y2-(6x2+y)-(2x2+5y2)
(5x2+7xy+—x)+(6x2+xy+9x)
53
(—xy+4y2+6)+(x2-—xy+9y2+7)
44
(xy+—y-—)+(xy-x-3)
(2y+2x+5z2)-(6y-4x+7z2)
(2k2-4k)-(8k2-7k+2)
(5a2+9a-6b)+(6a2-7a+6b)
4x2-(6x2-4x+4)+(8x+9)
y2-(9x2+y)+(8x2+5y2)
(7x2+4xy+—x)-(3x2-xy-4x)
43
(—xy-5y2+7)-(x2+—xy-3y2-1)
54
44
(xy+—y-—)-(xy+x+2)
(2y-7x-8z2)-(9y+4x-5z2)
(k2-k)+(4k2-7k+1)
(9a2-7a-7b)+(5a2+3a+b)
7x2-(3x2+9x+2)+(x-3)
2y2-(9x2+y)+(4x2-y2)
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