Question 357780
1.{{{9m + n = 13}}}
2.{{{m-9n=47}}}
Multiply eq. 1 by 9 and add to eq. 2 to eliminate {{{n}}} and solve for {{{m}}}.
{{{81m+9n+m-9n=117+47}}}
{{{82m=164}}}
{{{highlight(m=2)}}}
Then use either equation to solve for {{{n}}}.
{{{9(2)+n=13}}}
{{{18+n=13}}}
{{{highlight(n=-5)}}}