SOLUTION: solve by the substitution method 3x+7y=39 and -8+y=73

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Question 540795: solve by the substitution method 3x+7y=39 and -8+y=73
Answer by fcabanski(1391) About Me  (Show Source):
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-8+y=73


Add 8 to both sides.


y=81.


Substitute that into the first equation.


3x+7(81)=39


3x+567=39


3x=-528


x=-176

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