Question 182431
3m-2n=13........eq 1  
m+2n=7..........eq 2
:
add the equations together and the n terms will be eliminated because -2n+2n=-
:
we are left with 3m+m=13+7.
:
4m=20
:
{{{highlight(m=5)}}}
:
take m's found value and plug it into either equation and solve for n
:
5+2n=7
:
2n=2
:
{{{highlight(n=1)}}}