七年级数学下册整式的加减法计算题 620.docx
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七年级数学下册整式的加减法计算题620
8
(3x2-7xy-—x)-(4x2+xy+8x)
7
35
(—xy+8y2-1)-(x2-—xy-4y2-5)
44
91
(xy+—y-—)-(xy-x-2)
87
(7y-5x-8z2)+(7y-3x+5z2)
(2k2-2k)-(7k2+k+3)
(a2-8a+6b)-(5a2+4a-5b)
9x2-(8x2-6x-6)-(3x+8)
6y2+(9x2-y)+(9x2+7y2)
1
(2x2+4xy-—x)-(3x2+6xy+3x)
8
71
(—xy+8y2-1)+(x2-—xy+6y2-7)
68
19
(xy-—y-—)+(xy-x+9)
48
(4y-6x+z2)+(6y-x+4z2)
(3k2-8k)+(k2+9k-6)
(9a2-5a-4b)-(6a2+7a+b)
6x2-(3x2-6x-4)-(8x-8)
2y2+(4x2+y)-(2x2+4y2)
4
(9x2-6xy+—x)-(6x2+5xy+8x)
3
11
(—xy+6y2-1)+(x2-—xy+6y2+2)
47
16
(xy-—y+—)+(xy-x+6)
35
(9y+7x-4z2)-(3y+4x-6z2)
(4k2-7k)+(4k2+4k+2)
(2a2+9a-b)+(3a2+2a+2b)
6x2+(6x2-9x-7)+(3x-2)
2y2+(7x2-y)-(5x2-y2)
1
(4x2+5xy+—x)-(6x2-7xy+5x)
6
11
(—xy-7y2-8)-(x2-—xy-y2-9)
78
11
(xy-—y+—)-(xy-x-5)
46
(8y-9x+3z2)-(8y-4x-7z2)
(2k2+3k)-(k2+7k-6)
(7a2-5a+b)-(8a2-7a-3b)
8x2-(7x2-3x+6)-(5x+4)
9y2+(7x2-y)+(7x2-y2)
5
(3x2-4xy+—x)-(6x2+xy+2x)
4
25
(—xy-9y2+2)+(x2+—xy-7y2+5)
34
11
(xy-—y+—)-(xy+x-7)
56
(7y-3x+z2)+(4y-3x+6z2)
(k2+5k)-(6k2+5k+3)
(6a2-4a-7b)+(8a2+9a-b)
8x2+(3x2-8x-4)-(8x-5)
y2+(2x2-y)+(9x2+5y2)
3
(x2+7xy-—x)+(5x2+9xy-x)
4
34
(—xy-8y2+2)+(x2+—xy+y2-1)
45
61
(xy+—y-—)-(xy+x+7)
53
(5y+5x-2z2)+(3y-x+7z2)
(5k2-3k)+(9k2+9k+5)