Question 164198
 1.{{{7x - 5y = 14}}}
 2.{{{-4x + y = 27}}}
Multiply eq. 2 by 5 and add to eq. 1,
{{{(7x-5y)+5(-4x+y)=14+5(27)}}}
{{{(7x-5y)+(-20x+5y)=149}}}
{{{-13x=149}}}
{{{highlight(x=-149/13)}}}
From eq. 2,
2.{{{-4x + y = 27}}}
{{{-4(-149/13) + y = 27}}}
{{{596/13+ y = 27}}}
{{{y=27-596/13}}}
{{{y=351/13-596/13}}}
{{{highlight(y=-245/13)}}}