SOLUTION: 2(a-4)+15=13 i know the answer the answer is a=3 but how do i get 3 man this is so confusing

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Question 344288: 2(a-4)+15=13
i know the answer the answer is a=3 but how do i get 3 man this is so confusing
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
2%28a-4%29%2B15=13 Start with the given equation.


2a-8%2B15=13 Distribute.


2a%2B7=13 Combine like terms on the left side.


2a=13-7 Subtract 7 from both sides.


2a=6 Combine like terms on the right side.


a=%286%29%2F%282%29 Divide both sides by 2 to isolate a.


a=3 Reduce.


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Answer:

So the solution is a=3


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Jim