SOLUTION: 8a-4(-5a-2)=12a

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Question 157751: 8a-4(-5a-2)=12a
Answer by jim_thompson5910(35256) About Me  (Show Source):
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8a-4%28-5a-2%29=12a Start with the given equation.


8a%2B20a%2B8=12a Distribute.


28a%2B8=12a Combine like terms on the left side.


28a=12a-8 Subtract 8 from both sides.


28a-12a=-8 Subtract 12a from both sides.


16a=-8 Combine like terms on the left side.


a=%28-8%29%2F%2816%29 Divide both sides by 16 to isolate a.


a=-1%2F2 Reduce.


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Answer:

So the answer is a=-1%2F2 which in decimal form is a=-0.5.