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**-16(2a) --> How to isolate variable?**

## Homework Statement

-16(2a)

How do I isolate the variable? This is probably an EXTREMLY simple question. Its times like this that makes me wish I paid attention in highschool algebra.

## The Attempt at a Solution

Don't really know what to do without violating some basic arithmetic law.

I tried setting it equal to 0 but??

-32a = 0

My professor got the answer of [tex]a=\frac{5\sqrt{5}}{2} [/tex]

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