解方程,x-(4/7x+ 900)=(3/14)x
问题描述:
解方程,x-(4/7x+ 900)=(3/14)x
答
x-4/7x-900=3/14x
3/7x-900=3/14x
3/7x-3/14x=900
6/14x-3/14x=900
3/14x=900
x=900*(14/3)=300*14=4200