Question

3m + 2n =12 5m + n =13​

Answer 1

3m+2n=12

5m+n=13

n=13-5m

3m+2(13-5m)=12

3m+26-10m=12

-7m=-14

m=2

3.2+2n=12

6+2n=12

2n=12-6

n=3

(6+6=12