Question

2х -3у = 1 х/у=0,75

Answer 1

$left { {{2x-3y=1} atop { frac{x}{y} =0,75}} right. \ left { {{2x-3y=1} atop {x=0,75y}} right. \ left { {{2*0,75-3y=1} atop {x=0,75y}} right. \ 1,5-3y=1 \ -3y=1-1,5 \ -3y=-0,5 \ y=6 \ left { {{y=6} atop {x=0,75*6 }} right. \ left { {{y=6} atop {x=4,5}} right.$