解方程. ①2x+3×0.9=24.9 ②120%x+x=44.

问题描述:

解方程.
①2x+3×0.9=24.9
②120%x+x=44.

①2x+3×0.9=24.9,         2x+2.7=24.9,     2x+2.7-2.7=24.9-2.7,             2...