4a+3a-2a=?2b-b+0.5b=?10x-(7x+x)=?6x-1.5x=?8x+4x-8x=?7.5x-x+2.5=?5x-(3x-2.4x)=?
人气：390 ℃ 时间：2019-08-19 07:49:38
解答
4a+3a-2a=5a
2b-b+0.5b=1.5b
10x-(7x+x)=2x
6x-1.5x=4.5x
8x+4x-8x=4x
7.5x-x+2.5=6.5x+2.5
5x-(3x-2.4x)=4.4x
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