this is simultaneous equation btw if you want to search up the lesson
3m-n=5
2m+5n=7
multiple the first equation by 5 so it could be equal to the second equation
15m-5n=25
2m+5n=7
the -5n and +5n cancel each other!
so it’s
15m=25
2m=7
(add the equations together)
17m=32
m=1.8
now take an equation from above (the original ones)
3m-n=5
3x1.8-n=5
5.4-n= 5
n= 0.4
ANSWER:
m= 1.8
n=0.4