SOLUTION: What is the substitution method of equation: x + 3y = 2 -x + y = 1

Algebra ->  Linear-equations -> SOLUTION: What is the substitution method of equation: x + 3y = 2 -x + y = 1      Log On


   

Question 283761: What is the substitution method of equation:
x + 3y = 2
-x + y = 1
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
This system of equations is made for elimination not substitution.
add the two equations
4y=3
y=3/4
-x+y=1
-x+3/4=1
-x=1/4
x=-1/4
substitution
x=2-3y
-x=3y-2
-x+y=1
3y-2+y=1
4y=3
y=3/4
continue as above