5/6x-1=7/85/6x=1+7/85/6x=15/8x=15/8*6/5=9/4等于四分之九即2又四分之一
5/6x-1=7/8等号两边同时乘以4840x-48=4240x=90x=9/4
答案:9/4
x*5/6-1=7/8x*5/6=1+7/8=15/8x=15/8 *6/5=9/4
5x/6-1=7/85x/6=15/8x=(15/8)*6/5 =9/4