北师大版七年级数学下册整式的加减法计算题精选 177.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177
21
(—xy-8y2+2)+(x2+—xy-2y2-3)
37
81
(xy+—y+—)+(xy-x-2)
74
(9y-3x-5z2)+(2y-x+6z2)
(3k2-3k)-(8k2+7k-5)
(8a2-8a+b)-(2a2-7a-5b)
8x2+(7x2-8x+8)-(x-6)
9y2+(9x2-y)-(3x2-7y2)
1
(7x2+4xy-—x)+(3x2+6xy-4x)
7
61
(—xy+8y2+3)+(x2+—xy-y2+2)
57
21
(xy-—y-—)-(xy-x+8)
38
(8y-7x-6z2)-(6y+6x-7z2)
(9k2+5k)-(k2-2k+7)
(5a2+2a-7b)-(6a2-7a-2b)
7x2-(5x2-9x+1)+(4x+1)
3y2+(x2+y)-(x2+5y2)
1
(8x2+7xy-—x)+(x2+3xy+4x)
6
71
(—xy-3y2-1)-(x2+—xy+3y2+9)
86
51
(xy-—y-—)+(xy+x+2)
48
(y+2x-5z2)+(4y+2x+7z2)
(3k2+7k)-(k2+8k+4)
(5a2-7a-7b)-(8a2+4a-9b)
x2-(2x2-8x-5)-(3x+4)
3y2+(2x2-y)+(6x2+7y2)
1
(6x2+5xy+—x)-(2x2+5xy+6x)
7
51
(—xy-3y2-9)-(x2+—xy-3y2-7)
45
11
(xy-—y-—)-(xy+x-3)
64
(y-3x+z2)-(7y+2x+9z2)
(8k2+4k)+(8k2-3k+8)
(9a2+9a-2b)+(2a2-3a+9b)
7x2+(2x2-7x+9)-(3x-6)
2y2+(6x2-y)-(x2-6y2)
1
(9x2+4xy+—x)+(2x2+6xy-9x)
8
97
(—xy-5y2+4)-(x2+—xy-6y2+5)
88
57
(xy+—y-—)+(xy-x+8)
48
(5y-8x+6z2)-(5y-5x+3z2)
(4k2+7k)+(5k2+k-4)
(9a2-4a+7b)-(8a2+4a-2b)
8x2-(2x2-8x+7)-(3x+3)
5y2-(2x2+y)-(8x2-y2)
1
(3x2-8xy+—x)-(9x2+7xy-6x)
6
12
(—xy-y2+7)+(x2+—xy-8y2-4)
43
11
(xy-—y+—)+(xy+x-4)
55
(8y+2x-8z2)+(2y-6x+3z2)
(2k2-7k)-(3k2-7k+6)
(a2-8a-4b)+(4a2+7a+7b)