5(x-1.2)-3(x+2)=4.8
人气：247 ℃ 时间：2020-05-31 19:33:41
解答
5x-5*1.2-3x-3*2=4.8
5x-6-3x-6=4.8
5x-3x=4.8+6+6
2x=16.8
x=16.8÷2
x=8.4
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