一根绳子长120m,剪去一段后,剩下的剪去的长3m,剪去多少米?还剩多少米?

问题描述:

一根绳子长120m,剪去一段后,剩下的剪去的长3m,剪去多少米?还剩多少米?

x+y=120
x-y=3
x=61.5 y=58.5