北师大版七年级数学下册整式的加减法计算题精选 91Word下载.docx
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7
(7x2+7xy+—x)+(6x2-9xy+2x)
6
44
(—xy+y2-9)+(x2+—xy-6y2+4)
53
31
(xy+—y-—)-(xy+x-8)
47
(3y-7x+3z2)+(2y+7x-7z2)
(9k2-8k)-(k2-9k-8)
(9a2+9a+6b)+(8a2+7a+8b)
4x2-(4x2+6x-8)-(7x-2)
4y2-(3x2+y)-(8x2-3y2)
1
(6x2-6xy-—x)-(6x2-4xy+9x)
3
59
(—xy-y2-6)-(x2-—xy-y2-1)
68
11
(xy-—y-—)-(xy-x-9)
34
(3y+9x+4z2)+(9y-8x-9z2)
(6k2-4k)+(7k2+k-8)
(5a2+7a-7b)+(3a2-2a-7b)
9x2-(9x2+7x+1)+(2x+3)
y2-(7x2-y)-(7x2-7y2)
(4x2-6xy+—x)-(x2+8xy+2x)
51
(—xy+4y2+1)+(x2-—xy+y2+2)
64
15
(xy-—y+—)-(xy+x-9)
54
(8y+4x-6z2)+(2y-3x-6z2)
(8k2+9k)-(2k2+6k+6)
(4a2-a-2b)-(7a2+8a-3b)
5x2+(8x2-2x-7)+(2x-5)
9y2-(6x2+y)-(9x2-3y2)
4
(6x2-3xy-—x)+(9x2+5xy+7x)
5
41
(—xy+3y2+2)-(x2-—xy-y2+7)
33
(xy-—y-—)+(xy-x+2)
63
(4y-3x-8z2)-(9y+3x+7z2)
(6k2-7k)+(3k2+6k+1)
(4a2-6a-b)-(7a2+7a+4b)
2x2-(4x2-6x+4)+(4x-7)
6y2-(8x2-y)-(5x2-6y2)
8
(5x2-5xy+—x)+(2x2+xy-3x)
49
(—xy+4y2-3)+(x2+—xy+6y2+4)
38
51
(xy+—y-—)-(xy-x+5)
48
(4y+2x+9z2)+(5y-3x-7z2)
(3k2-5k)-(6k2-5k-2)
(4a2-3a+4b)+(6a2-9a-8b)
4x2+(8x2+9x-3)+(7x+8)
5y2+(3x2+y)+(6x2-3y2)