来自明冬萍的问题
解方程2.7x+3=97.50.95÷0.4x=1.96.8+x=24.56x-4x7.5=244.8x-8=25.612x-6x5=2109x-4x=74.6180（x÷4）=74
解方程2.7x+3=97.50.95÷0.4x=1.96.8+x=24.56x-4x7.5=244.8x-8=25.612x-6x5=2109x-4x=74.6
180（x÷4）=74
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2020-03-06 10:00