2m+3n=18 dan 5m+6n=39 Tolong banget nih yaa Makasii

Hasilnya lihat penyelesaian in

2m+ 3n= 18 (5) 10m + 15n = 90
5m+6n=39 (2) 10m + 12n = 78 _
3n = 12
n = 4

2m+3n =18
2m+3 (4)=18
2m+12=18
2m= 6
m=3