(27-x)*2.4+3.6=100-20.8这道方程怎么解
问题描述:
(27-x)*2.4+3.6=100-20.8这道方程怎么解
答
(27-x)*2.4+3.6=100-20.8
(27-x)*2.4=100-20.8-3.6
(27-x)*2.4=75.6
27-x=31.5
x=-4.5