北师大版七年级数学下册整式的加减法计算题精选 372.docx
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北师大版七年级数学下册整式的加减法计算题精选372
1
(5x2-2xy+—x)-(7x2+8xy-7x)
5
91
(—xy+8y2+6)+(x2-—xy+4y2+5)
88
41
(xy+—y-—)-(xy-x+2)
53
(6y+8x+z2)-(y+4x-3z2)
(5k2+3k)-(2k2+4k+6)
(4a2+3a+6b)+(9a2-8a+7b)
6x2-(3x2-4x+7)+(5x+8)
8y2+(6x2+y)-(7x2-5y2)
4
(6x2-xy-—x)+(9x2+xy+3x)
5
91
(—xy+2y2+5)-(x2-—xy+7y2-3)
87
43
(xy-—y+—)-(xy+x-8)
54
(9y-7x+6z2)-(8y+3x-2z2)
(6k2+8k)+(4k2-3k-1)
(7a2-3a-b)-(5a2-3a-7b)
7x2-(7x2-x+7)+(8x+6)
2y2-(2x2-y)-(3x2-6y2)
1
(5x2-2xy-—x)+(6x2+2xy+6x)
7
41
(—xy+8y2+9)+(x2-—xy-9y2-3)
36
31
(xy+—y+—)+(xy+x+1)
44
(2y+2x-2z2)+(4y-7x-2z2)
(6k2+9k)-(4k2+k+5)
(6a2+2a-2b)+(5a2+7a+9b)
5x2+(x2+3x+1)+(9x-7)
7y2-(3x2+y)-(4x2-6y2)
1
(6x2+6xy+—x)+(5x2-9xy-4x)
8
34
(—xy+5y2+9)-(x2-—xy+4y2-6)
43
36
(xy+—y-—)+(xy+x-2)
45
(y+5x-9z2)+(3y-x-6z2)
(8k2-2k)-(5k2-2k-8)
(4a2-6a-5b)+(3a2-3a+b)
2x2-(6x2-3x+3)+(7x+7)
2y2-(5x2+y)+(4x2-4y2)
8
(3x2+9xy-—x)-(5x2+6xy-8x)
7
41
(—xy-5y2-7)-(x2-—xy+5y2-1)
33
61
(xy+—y-—)+(xy+x-1)
77
(2y+3x+5z2)+(6y+7x-9z2)
(6k2+6k)-(7k2-k+2)
(6a2+8a+4b)+(8a2-3a-9b)
8x2+(9x2-3x+6)-(4x-3)
6y2-(2x2-y)-(5x2-y2)
1
(7x2-9xy+—x)+(7x2-2xy+7x)
4
11
(—xy-7y2-6)+(x2+—xy-5y2-7)
35
34
(xy-—y-—)-(xy-x+7)
43
(8y+6x+2z2)+(2y-3x+3z2)
(3k2+3k)+(8k2-8k-4)