Question

x - y $frac{x}{y}$ 2 + x + y$frac{x}{y}$ 4 = 1

Answer 1

$x-y*frac{x}{y}*2+x+y*frac{x}{y}*4=1\ x-2x+x+4x=1\ 4x=1\ x=frac{1}{4}$