北师大版七年级数学下册整式的加减法计算题精选 86.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86
65
(xy+—y-—)+(xy-x-8)
76
(2y-4x+5z2)-(5y+5x+7z2)
(5k2-3k)-(4k2-6k+3)
(8a2+3a-4b)-(6a2-5a-7b)
6x2+(6x2+5x+7)-(2x-5)
3y2-(8x2-y)+(9x2-9y2)
1
(8x2-3xy+—x)-(8x2-2xy+3x)
6
38
(—xy+y2+4)+(x2-—xy+7y2+5)
47
13
(xy-—y+—)+(xy+x+8)
74
(2y-4x-7z2)+(7y+9x-7z2)
(5k2-8k)-(7k2-5k+9)
(5a2-7a+4b)+(3a2+9a+7b)
4x2-(7x2+8x+3)-(6x+1)
y2-(3x2-y)-(9x2-6y2)
1
(7x2-7xy+—x)-(x2+8xy-8x)
7
11
(—xy+8y2+5)-(x2-—xy-3y2-1)
38
52
(xy-—y+—)+(xy+x-2)
43
(9y+2x-2z2)+(3y+8x-3z2)
(2k2-6k)-(8k2+4k+2)
(2a2-6a-2b)+(5a2-8a-8b)
7x2+(9x2-3x-9)-(4x+3)
7y2-(4x2-y)-(5x2+7y2)
1
(x2-9xy+—x)+(x2-3xy-5x)
5
51
(—xy+9y2+1)+(x2+—xy+3y2-1)
45
76
(xy-—y+—)-(xy+x-6)
65
(2y-7x+3z2)-(4y+3x-z2)
(6k2-4k)+(9k2+3k-3)
(5a2+4a+8b)-(5a2+9a-8b)
2x2+(9x2+9x-9)+(x+4)
3y2+(4x2+y)-(5x2-9y2)
6
(5x2+4xy+—x)-(6x2+3xy-x)
5
92
(—xy+4y2-9)-(x2-—xy+3y2+8)
83
76
(xy+—y-—)-(xy-x-4)
87
(9y-5x+7z2)-(7y-6x-2z2)
(5k2-7k)+(4k2+2k+8)
(7a2+6a-7b)+(5a2+9a-8b)
2x2-(9x2+4x-1)+(5x-3)
8y2+(5x2-y)+(4x2-6y2)
1
(8x2-8xy-—x)-(5x2-7xy+8x)
6
11
(—xy-9y2+5)+(x2+—xy-4y2-3)
76
66
(xy+—y+—)-(xy-x-2)
77
(6y-2x-8z2)-(y+3x+z2)
(5k2-k)-(5k2-7k+8)
(5a2+2a-3b)-(2a2-2a-8b)
6x2+(5x2+5x+9)-(6x+1)