SOLUTION: Solve the system of equations using the substitution method 1. x+y=4 y=3x

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Question 255138: Solve the system of equations using the substitution method
1. x+y=4 y=3x
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
substitute 3x for y in x+y=4
x+3x=4
combine x and 3x
divide by 4