SOLUTION: need help could u explain each step thanks 2x-y=6 x=13-2y equations by substitution thank you so much homework

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Question 71983This question is from textbook ALGEBRA
: need help could u explain each step thanks
2x-y=6
x=13-2y equations by substitution
thank you so much homework This question is from textbook ALGEBRA

Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
X=13-2Y NOW REPLACE X BY (13-2Y) AND SOLVE FOR Y
2(13-2Y)-Y=6
26-4Y-Y=6
-5Y=6-26
-5Y=-20
Y=-20/-5
Y=4 ANSWER. NOW REPLACE Y WITH 5 AND SOLVE FOR X
X=13-2*4
X=13-8
X=5 ANSWER.
PROOF
3=13-2*+5
3=13-10
3=3