SOLUTION: Solve using the substitution method: x=3y-4 2x-y=7

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Question 182792This question is from textbook Algebra 1 Prentice Hall
: Solve using the substitution method:
x=3y-4
2x-y=7 This question is from textbook Algebra 1 Prentice Hall

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve using the substitution method:
x=3y-4
2x-y=7
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Substitute x = 3y-4 into the 2nd equation:
2(3y-4) - y = 7
6y - 8 - y = 7
5y = 15
y = 3
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Since x = 3y-4, x = 3*3 - 4 = 5
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x = 5; y = 3
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Cheers,
Stan H.