(0.4x+0.6)*5=9怎么做
问题描述:
(0.4x+0.6)*5=9怎么做
答
(0.4x+0.6)*5=9
2x+3=9
2x=6
x=3
(0.4x+0.6)*5=9怎么做
(0.4x+0.6)*5=9
2x+3=9
2x=6
x=3