北师大版七年级数学下册整式的加减法计算题精选 201.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201
51
(—xy+3y2+2)+(x2+—xy-4y2-2)
45
11
(xy+—y-—)+(xy+x-1)
84
(9y-6x+8z2)+(9y-2x+5z2)
(2k2+6k)+(8k2+2k-4)
(9a2+7a-6b)+(8a2+9a+b)
x2-(2x2-3x+2)-(4x-9)
9y2-(7x2+y)+(5x2-9y2)
1
(3x2+4xy+—x)-(8x2+xy+9x)
5
17
(—xy-6y2-2)+(x2+—xy+2y2+9)
68
28
(xy+—y-—)-(xy-x+5)
37
(y+2x-z2)+(6y+x-9z2)
(k2-2k)-(4k2+2k-8)
(4a2+4a-6b)+(6a2+9a+6b)
9x2-(8x2+7x+3)+(7x+8)
9y2+(7x2-y)-(9x2-5y2)
4
(6x2+2xy-—x)+(6x2+8xy-3x)
5
11
(—xy-2y2-2)+(x2-—xy+9y2+9)
74
74
(xy+—y+—)+(xy-x-2)
65
(9y+2x+4z2)+(2y-7x+9z2)
(4k2-2k)+(4k2-6k+2)
(5a2+2a+b)+(a2+7a+5b)
6x2+(2x2+x+1)+(9x-8)
6y2+(6x2-y)+(4x2-6y2)
1
(6x2+3xy-—x)-(x2-8xy-4x)
7
21
(—xy+2y2-7)+(x2-—xy+5y2-1)
33
21
(xy-—y+—)-(xy-x+3)
38
(y+5x-6z2)-(4y-2x+z2)
(3k2-k)-(7k2+8k-7)
(5a2+a-5b)+(5a2+7a-6b)
6x2+(x2-4x-3)+(9x-7)
6y2+(6x2-y)+(9x2+4y2)
1
(7x2-9xy-—x)+(5x2-7xy+6x)
5
41
(—xy-4y2-9)+(x2+—xy-3y2-9)
34
21
(xy-—y+—)+(xy-x+1)
35
(9y+5x+9z2)+(5y+4x+3z2)
(6k2-9k)-(9k2-k+3)
(2a2-5a-4b)-(7a2+8a+3b)
4x2+(6x2+8x-1)+(3x+7)
9y2+(5x2+y)+(2x2-y2)
6
(3x2-2xy-—x)-(5x2+2xy+3x)
5
41
(—xy+6y2+4)-(x2+—xy-6y2-1)
37
71
(xy+—y+—)-(xy-x+8)
63
(4y+9x-5z2)+(y-x+9z2)
(2k2-8k)-(3k2-8k-6)
(4a2+7a-5b)-(6a2-a+2b)