4x-3y/x-2y÷6y-8x/y-2x

问题描述:

4x-3y/x-2y÷6y-8x/y-2x

原式=(4x-3y)/(x-2y)÷2(4x-3y)/(2x-y)
=(4x-3y)/(x-2y)*(2x-y)/2(4x-3y)
=1/2