北师大版七年级数学下册整式的加减法计算题精选 126.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126
65
(xy+—y-—)+(xy+x+2)
56
(8y-2x-9z2)-(6y+5x-5z2)
(k2-4k)-(2k2+8k+4)
(4a2+8a-b)+(a2+9a+9b)
7x2+(5x2-2x-2)+(2x+4)
8y2+(x2+y)+(4x2-4y2)
1
(2x2-xy+—x)-(3x2+8xy-x)
3
96
(—xy+4y2-8)-(x2-—xy-4y2-1)
85
11
(xy+—y+—)-(xy-x+1)
78
(y+3x-9z2)+(6y+4x+8z2)
(2k2-9k)+(3k2-9k-9)
(9a2-9a+5b)+(5a2+a-2b)
5x2+(6x2-8x-2)-(9x-4)
6y2-(5x2+y)-(4x2+3y2)
1
(8x2-4xy+—x)-(6x2+9xy+4x)
5
71
(—xy-3y2-8)+(x2+—xy-2y2-8)
86
61
(xy-—y-—)-(xy+x-7)
54
(6y-9x-2z2)-(7y+3x+z2)
(2k2-3k)+(4k2+7k-3)
(2a2+9a-8b)+(6a2+9a+9b)
2x2-(5x2+x+5)+(x+7)
5y2-(9x2+y)+(2x2+5y2)
9
(8x2+9xy-—x)+(5x2-xy+x)
8
11
(—xy-8y2+4)+(x2+—xy+6y2+8)
75
49
(xy+—y+—)+(xy-x+6)
58
(9y-7x-5z2)+(5y-4x+7z2)
(3k2-k)-(k2+3k-1)
(2a2+6a-9b)-(a2+8a-9b)
6x2+(6x2+x-1)-(7x-2)
y2-(2x2+y)-(2x2-2y2)
1
(9x2+2xy-—x)-(3x2+6xy+4x)
7
41
(—xy+8y2-4)+(x2+—xy-4y2+1)
53
22
(xy+—y+—)-(xy-x+3)
33
(7y-8x-3z2)+(8y+4x+3z2)
(7k2+3k)-(6k2+7k-2)
(4a2+a-b)+(5a2-3a+b)
5x2+(5x2-7x+5)-(3x+1)
8y2+(2x2+y)-(7x2+2y2)
8
(8x2+6xy-—x)+(x2+3xy+4x)
7
41
(—xy-y2-8)+(x2-—xy-y2+8)
53
61
(xy+—y-—)-(xy-x-3)
56
(8y+3x-5z2)-(5y-6x-5z2)
(2k2+5k)+(4k2+8k+3)
(5a2+6a-7b)-(7a2+2a+7b)
5x2+(3x2+2x-5)-(4x+7)