70%x-5/12x=二又5/6 急
问题描述:
70%x-5/12x=二又5/6 急
答
70%x-12分之5x=2又6分之5
7/10x-5/12x=2又5/6
42/60x-25/60x=2又5/6
17/60x=17/6
x=17/6*60/17
x=10亲