七年级数学整式的加减法计算题大全 478.docx
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七年级数学整式的加减法计算题大全478
86
(xy-—y-—)-(xy-x+2)
75
(y+6x+z2)-(9y-6x+4z2)
(9m2+2m+3)+(6m-n-1)
(5x2+2x-5)+3(5x2+2x)
-8(x2-2)-8(x2+7)
-(x2y-3xy+2)+3(x2y+9xy-3)
71
(—x2-17x-17y)-(—x2-20x+13y)
66
11
-—(8k3+k2+8)-—(9k3-4k2+3k)
45
(8k2-5k)+(5k2-6k-7)
(9a2-3a+3b)+(9a2+a-b)
8x2+(8x2-7x-3)+(8x+8)
8y2+(3x2-y)+(6x2+9y2)
2
(x2+xy+—x)-(5x2-7xy+4x)
3
53
(—xy-4y2+8)+(x2-—xy-5y2-9)
64
11
(xy-—y+—)+(xy+x+7)
48
(4y-4x-2z2)-(5y-9x+6z2)
(3m2-7m-6)-(7m-8n+7)
(9x2-5x+2)+2(6x2+7x)
-7(x2+4)+4(x2+1)
-(x2y-4xy+7)+5(x2y-2xy-8)
86
(—x2+26x+13y)+(—x2+11x-11y)
77
11
-—(5k3+4k2+6)-—(4k3-4k2+9k)
25
(4k2-5k)+(4k2-9k-6)
(7a2+7a-9b)+(8a2+6a+4b)
7x2-(x2-8x-3)-(8x-3)
2y2+(9x2+y)-(2x2+4y2)
3
(9x2+7xy+—x)+(2x2+2xy+3x)
4
97
(—xy-6y2+1)+(x2+—xy+8y2+4)
86
19
(xy-—y-—)-(xy+x-6)
78
(7y+4x+8z2)-(y+6x+7z2)
(9m2+3m-8)+(7m-2n-5)
(8x2+6x+1)+6(5x2-3x)
-9(x2-6)+7(x2+7)
-(x2y+8xy+2)-6(x2y+6xy-4)
35
(—x2-11x-12y)+(—x2+18x+27y)
44
11
-—(9k3+3k2+3)+—(5k3+9k2-7k)
64
(7k2+2k)+(7k2+2k+3)
(2a2+3a+4b)-(a2+7a+5b)
4x2+(2x2+x+2)+(8x+4)
7y2+(5x2-y)+(8x2+3y2)
4
(8x2-5xy+—x)-(7x2+8xy+3x)
3
71
(—xy+y2-3)-(x2-—xy+7y2+6)
88
25
(xy+—y+—)-(xy-x-8)
34
(9y+7x+9z2)+(5y+6x-4z2)
(5m2+3m-5)+(7m-8n+5)