SOLUTION: Determine using substitution or addition. 2a+b-2c=5 3b+4c=1 3c=-6

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Question 527576: Determine using substitution or addition.
2a+b-2c=5
3b+4c=1
3c=-6
Answer by solver91311(24713) About Me  (Show Source):
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Use substitution. Solve the third equation for . Substitute the derived value for into the second equation, then solve the second equation for . Substitute the derived values for and into the first equation and then solve for .

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