Question

Slove by the substution method
2m+n=5
m-5n=30

Answer 1

m = 5
n = -5

Answer 2

2m+n=5
n=5-2m
m-5(5-2m)=30
m-25+10m=30
11m=55
m=5
2(5)+n=5
10+n=5
n=-5

Answer 3

m=30+5n
substitute it in 1st equation
2(30+5n)+n=5
60+10n+n=5
11n=-55
n=-5

2m-5=5
2m=10
m=5