SOLUTION: Can you help explain how to work this problem? -7(a-8)=28

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Question 173562: Can you help explain how to work this problem?
-7(a-8)=28
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
-7%28a-8%29=28 first thing you have to do is distribute the left side
:
of the equation. mult property of distribution states a(b+c)=ab+ac..so lets use this property
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-7(a-8)=-7a+56
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-7a%2B56=28now subtract 56 from both sides
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-7a%2Bcross%2856%29-cross+%2856%29=28-56 combine terms on right side
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-7a=-28 now divide both sides by -7
:
highlight%28a=4%29