-9=2a-a

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Solution for -9=2a-a equation:


-9=2a-a

We simplify the equation to the form, which is simple to understand 
-9=2a-a

We move all terms containing a to the left and all other terms to the right. 
-2a+1a=+9

We simplify left and right side of the equation. 
-1a=+9

We divide both sides of the equation by -1 to get a. 
a=-9

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