SOLUTION: -5+7(-4+4a)=39

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Question 664092: -5+7(-4+4a)=39
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
-5%2B7%28-4%2B4a%29=39 Start with the given equation.


-5-28%2B28a=39 Distribute.


28a-33=39 Combine like terms on the left side.


28a=39%2B33 Add 33 to both sides.


28a=72 Combine like terms on the right side.


a=%2872%29%2F%2828%29 Divide both sides by 28 to isolate a.


a=18%2F7 Reduce.


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Answer:

So the solution is a=18%2F7