已知x:y=2:3,且2分之(2x-y)-6分之5=3分之(x-y),求x,Y的值
问题描述:
已知x:y=2:3,且2分之(2x-y)-6分之5=3分之(x-y),求x,Y的值
答
设x = 2k,y = 3k
所以代入(2x - y)/2 - 5/6 = (x - y)/3得
k/2 - 5/6 = -k/3
5k/6 = 5/6
所以k = 1
解得x = 2,y = 3