20=(8-a)

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Solution for 20=(8-a) equation:


20=(8-a)

We simplify the equation to the form, which is simple to understand 
20=(8-a)

Remove unnecessary parentheses
20=8-a

We move all terms containing a to the left and all other terms to the right. 
+1a=+8-20

We simplify left and right side of the equation. 
+1a=-12

We divide both sides of the equation by 01 to get a. 
a=-12

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