北师大版七年级数学下册整式的加减法计算题精选 273.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273
61
(—xy-4y2-1)-(x2-—xy-4y2+5)
56
11
(xy+—y+—)+(xy-x-7)
73
(7y+7x+9z2)+(2y-3x-6z2)
(5k2+3k)+(3k2-4k+6)
(2a2-2a-b)+(6a2-8a-8b)
6x2+(4x2+x+3)-(3x+1)
6y2+(6x2-y)-(6x2+y2)
4
(2x2+7xy+—x)+(7x2-xy+6x)
5
41
(—xy+8y2+5)-(x2-—xy+5y2-3)
38
16
(xy-—y-—)+(xy+x+3)
37
(4y-7x+5z2)+(3y+9x-7z2)
(k2+3k)-(2k2-5k+4)
(7a2-7a+5b)-(5a2-2a-8b)
5x2+(9x2-2x+3)+(6x+2)
y2+(3x2+y)-(7x2+y2)
1
(7x2+5xy+—x)-(8x2+7xy+3x)
6
51
(—xy+8y2+4)+(x2-—xy-4y2+5)
68
51
(xy+—y+—)-(xy-x-7)
46
(3y+3x+9z2)+(8y+6x-8z2)
(4k2+2k)+(4k2-8k-6)
(5a2+2a-3b)+(7a2-9a-4b)
9x2+(8x2-9x-4)-(6x+9)
2y2-(7x2+y)+(4x2+6y2)
1
(2x2-5xy-—x)+(4x2+5xy-9x)
8
99
(—xy+8y2-4)+(x2+—xy-4y2-3)
88
16
(xy-—y+—)-(xy+x+6)
67
(5y-9x+8z2)+(3y-5x-4z2)
(7k2-4k)-(k2+7k-8)
(9a2+2a-8b)-(7a2+4a+5b)
2x2+(x2+8x+3)-(6x-5)
4y2-(x2-y)-(7x2+8y2)
1
(8x2-3xy-—x)+(9x2+xy+6x)
8
11
(—xy-y2-7)+(x2-—xy+9y2+1)
45
19
(xy-—y-—)+(xy-x+8)
68
(9y+2x+9z2)-(y-6x-z2)
(6k2-8k)+(6k2+9k-3)
(7a2-4a-7b)-(a2+4a+4b)
8x2+(x2-3x+2)-(9x+5)
3y2+(4x2-y)-(4x2-2y2)
3
(7x2+3xy-—x)+(3x2+4xy+x)
4
21
(—xy-6y2-9)-(x2-—xy+4y2-6)
37
47
(xy+—y-—)-(xy+x+5)
36
(7y+6x+4z2)+(8y+6x+8z2)
(5k2+3k)+(6k2+4k-1)
(9a2-4a+7b)+(3a2+a+9b)