七年级数学下册整式的加减法计算题 276.docx
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七年级数学下册整式的加减法计算题276
1
(6x2-5xy+—x)+(4x2-4xy+3x)
3
11
(—xy+2y2+1)-(x2-—xy-3y2-7)
47
51
(xy+—y-—)-(xy-x+6)
67
(8y-9x+7z2)-(6y+8x-z2)
(5k2-7k)-(4k2-7k+1)
(3a2-4a-6b)+(9a2-7a+8b)
7x2+(7x2-4x+3)-(5x-5)
y2-(4x2+y)-(x2-7y2)
8
(6x2-9xy+—x)-(x2+3xy-3x)
7
97
(—xy-y2+8)+(x2+—xy-5y2-2)
86
81
(xy-—y+—)+(xy+x-7)
74
(7y+3x-3z2)+(y-2x-7z2)
(3k2+6k)-(8k2+7k+1)
(a2+9a-b)-(4a2-7a+8b)
3x2+(4x2+2x+5)+(6x-7)
2y2-(x2-y)+(x2-9y2)
1
(5x2-5xy-—x)+(5x2-5xy-4x)
4
15
(—xy-3y2-2)+(x2+—xy+2y2-6)
34
86
(xy+—y+—)+(xy-x-1)
75
(8y-8x-3z2)-(7y-x+3z2)
(3k2+5k)+(5k2-9k+4)
(8a2+7a+b)-(9a2-6a-3b)
2x2-(9x2+6x+4)+(x-5)
5y2+(6x2-y)+(4x2-9y2)
5
(2x2-xy+—x)-(x2+9xy-9x)
6
16
(—xy-5y2-1)-(x2+—xy+4y2-7)
37
71
(xy+—y+—)+(xy-x-3)
64
(2y-5x+6z2)+(7y+5x+7z2)
(7k2+8k)-(7k2+7k+9)
(9a2+5a-9b)-(9a2+6a+8b)
4x2-(4x2-2x-9)+(5x+3)
8y2-(3x2-y)-(x2-4y2)
1
(4x2+9xy+—x)+(x2-9xy+2x)
7
19
(—xy-y2-3)+(x2-—xy-3y2-3)
68
21
(xy-—y+—)+(xy-x-9)
35
(y-6x+7z2)-(2y+7x-3z2)
(k2-4k)-(9k2-7k+6)
(6a2+9a-2b)-(a2-5a+b)
6x2-(4x2+9x+6)-(7x+6)
6y2+(4x2-y)-(9x2-8y2)
8
(9x2-5xy-—x)+(8x2+3xy-5x)
7
16
(—xy-7y2-3)-(x2+—xy+9y2-9)
87
51
(xy-—y-—)-(xy-x+6)
48
(6y+8x+4z2)-(y+9x-8z2)
(6k2-3k)+(k2-k-5)