七年级数学下册整式的加减法计算题 754.docx
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七年级数学下册整式的加减法计算题754
x2-(3x2-6x+1)-(4x-4)
y2-(2x2-y)+(7x2-6y2)
1
(3x2-4xy+—x)+(6x2-4xy-4x)
8
34
(—xy+2y2+7)-(x2+—xy-5y2-8)
43
17
(xy+—y-—)+(xy+x+9)
76
(8y+4x-3z2)-(2y-x-9z2)
(4k2+6k)+(3k2-4k-6)
(4a2+7a-b)+(3a2-8a-3b)
4x2-(3x2+2x-3)-(9x-8)
4y2-(2x2+y)+(7x2-8y2)
1
(9x2-xy-—x)-(5x2-5xy+6x)
6
21
(—xy-6y2-5)+(x2+—xy-4y2-9)
37
23
(xy-—y+—)-(xy-x+6)
34
(y+6x-3z2)+(8y-4x-3z2)
(4k2+9k)+(k2-4k-8)
(9a2+7a-4b)+(4a2-3a-4b)
9x2+(6x2+8x-2)+(9x-4)
9y2+(7x2-y)-(6x2+9y2)
7
(8x2+5xy-—x)+(2x2-2xy-5x)
8
51
(—xy+2y2-4)-(x2+—xy-2y2-7)
63
12
(xy-—y+—)-(xy-x+7)
83
(7y+2x+2z2)-(8y+2x+4z2)
(8k2-4k)+(2k2-6k-8)
(6a2+a-3b)+(6a2-5a-3b)
3x2-(4x2+x-5)-(5x+9)
2y2+(3x2-y)-(6x2+y2)
6
(9x2+8xy-—x)-(3x2-9xy-5x)
7
87
(—xy-3y2-9)+(x2-—xy-5y2+1)
76
47
(xy+—y-—)+(xy-x-9)
58
(9y-9x-4z2)+(y+6x+2z2)
(7k2-9k)-(3k2-6k-4)
(9a2+9a+9b)+(7a2-5a+6b)
6x2-(9x2-8x-6)+(2x-1)
9y2+(4x2+y)-(5x2+7y2)
7
(3x2-7xy+—x)+(3x2+4xy+8x)
8
81
(—xy-3y2-3)-(x2-—xy-9y2+4)
74
63
(xy-—y+—)-(xy-x-7)
74
(8y+9x+3z2)+(2y+4x-2z2)
(7k2+2k)+(3k2+6k+8)
(8a2+9a+7b)+(7a2-5a-b)
4x2-(5x2+8x+4)-(4x+6)
8y2-(8x2-y)-(8x2+7y2)
6
(x2-7xy-—x)-(5x2+3xy+8x)
5
16
(—xy+7y2-7)-(x2-—xy-4y2+3)
85
11
(xy-—y-—)-(xy+x+8)
84