(X-16)/(X-28)=2方程怎么解?
问题描述:
(X-16)/(X-28)=2方程怎么解?
答
x-16=2(x-28)
x=40
答
(X-16)/(X-28)=2
X-16=2X-56
X-2X=-56+16
-X=-40
X=40