SOLUTION: Solve system by elimination -6c= 30 3b+2c=-7 b=a-3c-18

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Question 1051407: Solve system by elimination
-6c= 30
3b+2c=-7
b=a-3c-18
Answer by Alan3354(69443) About Me  (Show Source):
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Solve system by elimination
-6c= 30 --> c = -5
3b+2c=-7
b=a-3c-18
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Step 1, sub -5 for c.
Solve for b in the 2nd equation.
Then solve for a.
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