SOLUTION: If 12x+7y=19 and 4x-y=3 then what is the value of 8x+8y?

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Question 174724: If 12x+7y=19 and 4x-y=3 then what is the value of 8x+8y?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
12x%2B7y=19 Start with the first equation.


%2812x%2B7y%29-%284x-y%29=19-3 Subtract the second equation from the first equation.


12x%2B7y-4x%2By=19-3 Distribute


8x%2B8y=16 Combine like terms.


So the answer is 8x%2B8y=16