1/2(3x+18)-x=24怎么解?
人气:323 ℃ 时间:2020-04-22 04:59:16
解答
移项可得:1/2(3x+18)=24+x
3x+18=(24+x)X2
3x+18=48+2x
3x-2x =48-18
x =30
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