Question 316552
1.{{{13x-2y=70}}}
2.{{{2x-2y=4}}} 
From eq. 2,
{{{2y=2x-4}}}
Substitute into eq. 1
{{{13x-2y=70}}}
{{{13x-(2x-4)=70}}}
{{{11x+4=70}}}
{{{11x=66}}}
{{{highlight( x=6)}}}
Then use eq. 2 to find {{{y}}}.
{{{2y=2x-4}}}
{{{2y=2(6)-4}}}
{{{2y=12-4=8}}}
{{{highlight( y=4)}}}