-20=a-13

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Solution for -20=a-13 equation:


-20=a-13

We simplify the equation to the form, which is simple to understand 
-20=a-13

We move all terms containing a to the left and all other terms to the right. 
-1a=-13+20

We simplify left and right side of the equation. 
-1a=+7

We divide both sides of the equation by -01 to get a. 
a=-7

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