3x+2(x-2.3)=12.9怎么解决
问题描述:
3x+2(x-2.3)=12.9怎么解决
答
3x+2x-4.6=12.9
5x=17.5
x=3.5
3x+2(x-2.3)=12.9怎么解决
3x+2x-4.6=12.9
5x=17.5
x=3.5