SOLUTION: solve each system by substitution 3x+y=15 y=4x-6

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Question 243691: solve each system by substitution
3x+y=15
y=4x-6

Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
3x+y=15
y=4x-6
3x+4x-6=15
7x=21
x=3
9+y=15
y=6

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