SOLUTION: How do you solve this equation by substitution? Y=3x+12

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Question 777461: How do you solve this equation by substitution? Y=3x+12
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
Usually you have to use this method with a system of equations
Do you have another one ?
I can help you with more questions at: mthman@gmail.com
Thanks