SOLUTION: Solve by elimination 8x + 7y = -16 6x - 3y = -12

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Question 170337This question is from textbook Introductory Algebra
: Solve by elimination
8x + 7y = -16
6x - 3y = -12 This question is from textbook Introductory Algebra

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
8x + 7y = -16 multiply by 3
6x - 3y = -12 multiply by -4 & add
24x+21y=-48
-24x+12y=48
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33y=0
y=0 ans.
8x+7*0=-16
8x=-16
x=-16/8
x=-2 ans.
Proof:
6*-2-3*0=-12
-12-0=-12
-12=-12