问题描述:
(1)2x-10.3x (2)3x-x-5x (3)-b+0.6b-2.6b
(4)m-n²+m-n² (5)2(4x-0.5) (6)-3(1-1/6x)
(7)-x+(2x-2)-(3x+5) (8)3a²+a²-(2a²-2a)+(3a-a²)
(9)(5a+4a+7b)+(5c-3b-6a) (10)(8xy-x²+y²)-(x²-y²+8xy)
(11)(2x²-1/2+3x)-4(x-x²+1/2) (12)3x²-[7x-(4x-3)-2x²]
(4)m-n²+m-n² (5)2(4x-0.5) (6)-3(1-1/6x)
(7)-x+(2x-2)-(3x+5) (8)3a²+a²-(2a²-2a)+(3a-a²)
(9)(5a+4a+7b)+(5c-3b-6a) (10)(8xy-x²+y²)-(x²-y²+8xy)
(11)(2x²-1/2+3x)-4(x-x²+1/2) (12)3x²-[7x-(4x-3)-2x²]
问题解答:
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