6x+0.7=12.9
问题描述:
6x+0.7=12.9
答
3.6x+0.7=12.9
3.6x=12.2
x=61/18=3.38889
6x+0.7=12.9
3.6x+0.7=12.9
3.6x=12.2
x=61/18=3.38889