-1=1/2a+9

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Solution for -1=1/2a+9 equation:


-1=1/2a+9

We simplify the equation to the form, which is simple to understand 
-1=1/2a+9

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

We simplify left and right side of the equation. 
-2a=+10

We divide both sides of the equation by -02 to get a. 
a=-5

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