北师大版七年级数学下册整式的加减法计算题精选 116.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116
6
(3x2-7xy-—x)+(x2+2xy-8x)
5
19
(—xy-3y2+1)-(x2+—xy+4y2-4)
78
98
(xy+—y-—)-(xy+x-6)
87
(y+7x-7z2)-(3y-8x-2z2)
(3k2+7k)+(9k2+8k+5)
(5a2-7a-7b)-(6a2-a-7b)
5x2+(2x2+6x-3)-(9x-8)
y2-(2x2-y)-(3x2-9y2)
1
(2x2+xy+—x)+(8x2-5xy+6x)
4
11
(—xy+9y2+9)+(x2+—xy+8y2+7)
77
11
(xy-—y+—)+(xy+x-2)
38
(y-2x+6z2)+(6y-7x+8z2)
(9k2+2k)+(k2+9k+8)
(3a2+8a-6b)+(3a2+2a+5b)
3x2+(x2+2x+9)-(3x-1)
5y2+(2x2-y)-(2x2+7y2)
6
(x2+7xy-—x)-(2x2-8xy+9x)
5
18
(—xy+y2-3)-(x2+—xy-5y2-5)
57
14
(xy+—y-—)-(xy-x+6)
83
(9y-3x-2z2)+(8y-7x+3z2)
(5k2+k)+(6k2+3k-4)
(a2+8a-3b)-(8a2-8a+7b)
2x2-(5x2+2x+7)-(7x+4)
7y2+(8x2+y)+(7x2+4y2)
1
(8x2+7xy-—x)-(7x2-4xy+9x)
6
51
(—xy+9y2-2)+(x2+—xy+y2-9)
68
17
(xy+—y+—)+(xy-x+4)
46
(7y-x+z2)+(5y+8x-9z2)
(4k2+2k)-(k2+7k-7)
(a2-4a-6b)-(a2-9a-6b)
8x2+(9x2+9x-3)-(x-3)
2y2-(7x2-y)+(4x2-8y2)
6
(6x2+9xy+—x)-(4x2+7xy+9x)
7
11
(—xy+6y2-2)-(x2+—xy+6y2-8)
48
14
(xy-—y+—)+(xy-x+6)
35
(3y-4x+4z2)-(5y-5x-5z2)
(5k2-6k)+(2k2-9k+4)
(7a2+7a-2b)+(5a2+9a-3b)
x2-(9x2+5x-5)-(6x+7)
3y2-(4x2-y)+(5x2+5y2)
1
(6x2-5xy+—x)+(9x2+2xy+3x)
5
67
(—xy+2y2+7)+(x2+—xy+4y2+9)
76
14
(xy+—y-—)+(xy+x+7)
83
(2y-2x+7z2)-(2y-8x+8z2)
(6k2+8k)+(8k2+4k+2)