七年级数学整式的加减法计算题大全(66)
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8x2+(8x2-8x+5)+(8x+8)
9y2-(7x2+y)-(4x2+9y2)
5
(4x2-2xy-—x)-(3x2-xy+x)
4
1 1
(—xy-y2-4)+(x2-—xy-5y2+8) 3 6
7 4
(xy-—y+—)-(xy+x-2)
6 5
(6y-7x+4z2)-( y+4x+6z2)
(2m2-2m+2)+(9m+9n+4)
(7x2+5x-7)-9( x2-8x)
-6(x2-7)+8(x2+1)
-(x2y-8xy+2)+3(x2y-3xy-4)
5 3
(—x2-17x+20y)-(—x2-13x+25y) 4 4
1 1
-—(5k3+3k2+7)+—(5k3-4k2-6k)
4 4
(6k2-7k)-(6k2-4k-5)
(2a2-7a-9b)+(8a2-4a-5b)
8x2-( x2-5x+6)-(3x+3)