Question:
Solving Systems of Linear Equations by Substitution
1. 4x+y=12 (1)
x-y=8(2)
2. 4x+y=12
x-y=8
5x/5 = 20/5
3. X=4
4. 4(4) =y - 12
16+y = 12
Y =4
I think this would be an example of elimination method for solving a system of equations however I am unsure how it would transfer to substitution method thus I am needing assistance. I am needing this to be illustrated if you will in substitution but am unclear on the method and how it is done so am looking for assistance.