Y=(2X+3)/(X-2),那X=多少Y?怎么算出来,要详细过程

问题描述:

Y=(2X+3)/(X-2),那X=多少Y?怎么算出来,要详细过程

Y=(2(X-2)+7)/(X-2)
=2+7/(X-2)
所以 Y-2 = 7/(X-2)
X-2 = 7/(Y-2)
X=7/(Y-2) +2 = (2Y+4)/(X-2)