七年级数学下册整式的加减法计算题 698.docx
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七年级数学下册整式的加减法计算题698
4x2+(x2-8x-1)+(8x-6)
7y2-(7x2-y)+(6x2+6y2)
1
(3x2+6xy-—x)+(4x2-xy-5x)
8
11
(—xy+6y2-3)-(x2-—xy-5y2-8)
56
21
(xy-—y+—)-(xy+x+6)
36
(4y-3x-8z2)-(3y+2x+9z2)
(k2+k)-(5k2-4k+8)
(3a2-7a+b)-(8a2+3a+3b)
x2-(x2+4x-1)+(6x-7)
y2+(7x2+y)+(4x2+8y2)
1
(9x2-3xy-—x)+(6x2+3xy-6x)
8
11
(—xy+6y2-5)-(x2-—xy+6y2-5)
78
24
(xy+—y+—)-(xy-x+9)
35
(9y-5x+3z2)+(7y-4x-7z2)
(5k2+5k)-(3k2-k+5)
(6a2-2a-3b)-(2a2+4a-8b)
8x2+(2x2+5x-4)+(x+1)
2y2+(9x2+y)-(4x2-7y2)
1
(8x2+3xy+—x)-(4x2+8xy-5x)
5
44
(—xy+6y2-7)+(x2+—xy+4y2-2)
53
31
(xy-—y+—)-(xy+x+6)
46
(9y-2x-7z2)+(5y-9x+3z2)
(9k2-2k)+(2k2-2k+2)
(8a2-4a+9b)+(9a2+4a+3b)
7x2-(9x2+4x+7)-(4x+9)
8y2-(3x2-y)+(5x2+2y2)
8
(5x2+4xy+—x)+(5x2-8xy+8x)
7
74
(—xy-5y2+4)-(x2+—xy+2y2-2)
85
61
(xy+—y-—)-(xy+x-1)
55
(8y+2x+5z2)+(4y+2x+z2)
(7k2+2k)-(7k2+k+8)
(4a2-7a-6b)-(4a2-a-5b)
6x2+(6x2+2x-7)-(x+2)
8y2+(9x2-y)-(7x2+7y2)
9
(7x2-6xy+—x)+(2x2-6xy-3x)
8
11
(—xy-3y2+3)+(x2+—xy-8y2+2)
86
51
(xy-—y-—)+(xy+x+7)
64
(6y-6x-9z2)+(9y+9x-8z2)
(k2-2k)+(3k2-9k+3)
(7a2+9a+b)-(4a2+6a+5b)
3x2-(6x2+5x-6)-(x+3)
y2-(5x2-y)-(7x2+3y2)
1
(x2-5xy+—x)+(x2-7xy-4x)
3
18
(—xy+9y2+9)-(x2+—xy+3y2-3)
37
42
(xy-—y-—)+(xy+x+7)
33