SOLUTION: Solve using substitution y=x-4 x+3y=12

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Question 377294: Solve using substitution
y=x-4
x+3y=12

Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
1.
2.
Substitute eq. 1 into eq. 2,




Then from eq. 1,


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