解方程6.5x-2(5-x)=27.4
人气:480 ℃ 时间:2020-01-26 07:26:55
解答
6.5x-2(5-x)=27.4
6.5x-2×5+2x=27.4
6.5x+2x=27.4+10
8.5x=37.4
x=37.4÷8.5
x=4.4
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