Question

5x + 3y = 8
2x + y = 1
-x + 0y = 5
-x = 5
x = -5 ; is this the substitution method or elimination method?

Answer 1

Substitution Method

Answer 2

Thank you :)

Answer 3

Actually, this is the elimination method. The bottom equation has been multiplied through by -3 and then the two equations were added together which eliminates the y variable completely.
Substitution would look more like this:
5x+3(1-2x)=8...where the second equation was solved for y and then substituted into the first equation