七年级数学下册计算题大全249Word文件下载.docx
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64
(9y-x+8z2)+(7y-9x+8z2)
(4k2-3k)+(2k2-4k-8)
(6a2+5a-5b)-(9a2-6a+3b)
x2-(x2-6x+9)-(9x+6)
8y2+(9x2+y)-(x2-y2)
(9x2-6xy-—x)-(5x2+7xy-4x)
11
(—xy-8y2-6)-(x2+—xy+y2+7)
37
41
(xy+—y-—)-(xy-x-5)
34
(4y-8x-2z2)+(4y+3x-8z2)
(8k2-3k)-(9k2-9k+1)
(a2-9a-b)-(7a2+2a+3b)
3x2-(2x2+9x-7)+(8x-9)
8y2+(3x2-y)+(9x2-4y2)
9
(2x2+7xy+—x)-(x2-7xy+x)
(—xy-y2+9)-(x2-—xy-y2+8)
67
21
(xy-—y-—)-(xy+x+5)
35
(8y-3x+3z2)+(3y+4x-7z2)
(9k2+9k)-(8k2-4k+2)
(4a2+5a-4b)-(4a2-3a-8b)
5x2+(8x2+6x+2)+(8x+9)
y2-(x2-y)-(8x2-4y2)
(2x2+9xy-—x)-(6x2+5xy-8x)
4
63
(—xy+8y2+2)-(x2+—xy+4y2+3)
54
44
(xy-—y-—)+(xy-x+6)
53
(7y+7x-4z2)+(7y+3x+5z2)
(8k2+7k)-(2k2-9k-1)
(6a2-6a-5b)-(3a2-9a-5b)
7x2+(3x2+x+9)-(4x+5)
8y2+(9x2-y)+(8x2-y2)
7
(7x2+8xy+—x)+(6x2-5xy+8x)
6
(—xy+8y2+2)+(x2+—xy-5y2-7)
64
16
(xy-—y+—)+(xy-x+4)
47
(5y+6x-2z2)-(6y+5x+2z2)
(k2-7k)-(k2-7k+1)
(a2+6a-9b)+(3a2+a+2b)
2x2-(4x2+8x-5)+(7x-2)
5y2-(9x2-y)+(4x2-8y2)
(4x2-xy-—x)+(5x2-8xy+8x)
15
(—xy-5y2-7)+(x2-—xy-2y2-6)
(xy-—y-—)+(xy+x+5)
55
(7y-7x-3z2)+(7y-9x-6z2)
(5k2+4k)+(2k2+4k+8)
(3a2+6a-5b)-(9a2+6a+4b)
4x2-(4x2-8x+7)-(3x-5)
7y2-(x2+y)-(6x2+8y2)
5
(8x2-9xy+—x)+(4x2+2xy-8x)
(—xy-7y2+1)+(x2+—xy+9y2+1)
54
(xy-—y+—)-(xy+x+9)
65
(2y+7x+2z2)-(6y-3x+4z2)
(8k2+7k)-(2k2-3k-7)
(7a2-a+9b)+(4a2-9a-8b)
5x2-(2x2-8x-9)+(4x+9)
y2-(3x2+y)+(2x2+3y2)
(3x2+2xy+—x)-(2x2-3xy+x)
91
(—xy-9y2+2)-(x2+—xy-9y2-1)
87
12
(xy-—y+—)+(xy+x+2)
(8y+3x-3z2)-(5y+8x+z2)
(5k2+8k)+(k2-7k+9)
(4a2+8a-5b)-(7a2-4a+3b)
4x2-(8x2-2x-9)+(6x-1)
5y2+(9x2-y)+(2x2+4y2)
(5x2+5xy-—x)+(7x2+9xy+4x)
14
(—xy-2y2+1)+(x2-—xy-3y2-2)
55
57
(xy+—y-—)-(xy-x+2)
48
(9y+5x+z2)-(5y-x+9z2)
(2k2-9k)+(6k2+9k+6)
(3a2-5a-8b)+(9a2-3a-2b)
6x2+(3x2-9x-5)+(2x-2)
2y2-(6x2+y)-(2x2+3y2)
(8x2+6xy-—x)-(2x2+9xy+5x)
(—xy-2y2+7)-(x2-—xy+3y2-6)
53
45
(xy+—y+—)+(xy+x+7)
(9y+2x-z2)-(7y+x+4z2)
(4k2+3k)-(6k2+3k-8)
(9a2+8a+5b)-(2a2-9a+9b)
4x2+(2x2+5x-1)-(4x+5)
9y2+(8x2-y)+(x2+9y2)
(6x2-5xy+—x)-(7x2-8xy-x)
3
34
(—xy+9y2+4)-(x2+—xy-y2+4)
45
38
(xy+—y+—)-(xy+x+9)
(5y+9x-6z2)-(6y-4x-9z2)
(3k2+8k)+(9k2+4k-3)
(4a2-8a-b)-(8a2+4a-2b)
4x2+(x2-4x-3)+(2x+9)
3y2+(3x2+y)+(5x2+7y2)
(8x2-3xy+—x)-(9x2-xy-9x)
41
(—xy-7y2+9)+(x2+—xy-8y2-7)
17
(xy+—y+—)-(xy+x+1)
46
(3y-2x+8z2)+(6y-4x-6z2)
(8k2-k)-(k2+2k+4)
(8a2-7a+8b)+(7a2-5a-2b)
6x2+(4x2-6x-8)+(2x+3)
2y2+(8x2+y)-(4x2-y2)