解方程6.5x-2(5-x)=27.4
问题描述:
解方程6.5x-2(5-x)=27.4
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