13-a=

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Solution for 13-a= equation:


13-a =0

We simplify the equation to the form, which is simple to understand 
13-a=0

We move all terms containing a to the left and all other terms to the right. 
-1a=0-13

We simplify left and right side of the equation. 
-1a=-13

We divide both sides of the equation by -1 to get a. 
a=13

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