Question 419638
{{{2x+y=12}}}
{{{3x-y=13}}}
add
5x=25
2x+y=12
{{{(5x)/5=25/5}}}
{{{2x+y=12}}}
x=5
2*5+y=12
finally
x=5
y=12-10
and the solution
x=5
y=2