(5*x+2*y)/(x+y)=3,求x与y的关系,是不是x=2y?怎么算?读作:5乘以x+2乘以y的和除以x+y的和等于3

问题描述:

(5*x+2*y)/(x+y)=3,求x与y的关系,是不是x=2y?怎么算?
读作:5乘以x+2乘以y的和除以x+y的和等于3