若2x-3y=0,求5x+4y/3x-2y
问题描述:
若2x-3y=0,求5x+4y/3x-2y
答
2x-3y=0
2x=3y
x=1.5y
5x+4y/3x-2y
=7.5y+4y/4.5y-2y
=11.5y/2.5y
=4.6