(2x-y)/3 = (x+3y)/5 =2 求x、y
问题描述:
(2x-y)/3 = (x+3y)/5 =2 求x、y
答
解
(2x-y)/3=2
(x+3y)/5=2
即
2x-y=6 ①
x+3y=10 ②
①×3得:6x-3y=18 ③
③+②得:
7x=28
∴x=4,y=2