6分之X-9分之5X-22=0.5
问题描述:
6分之X-9分之5X-22=0.5
答
.
x/6-5x/9-22=0.5
9x-6*5x-22*54=0.5*54
(9-30)x-22*54=0.5*54
-21x=(22+0.5)*54
x=-(22.5)*54/21
x=2.571428571428571428571428571428571