Question 410995
{{{system( x-2y=3, 5x-y=6)}}}
from the first equation {{{x=3+2y}}} put it in the second equation
{{{system( x=3+2y, 5(3+2y)-y=6)}}}, {{{system( x=3+2y, 15+10y-y=6)}}}, {{{system( x=3+2y, 9y=-9)}}}, {{{system( y=-1, x=3+2*(-1))}}}, {{{system( x=1, y=-1)}}}