-12=2(-10+a)

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Solution for -12=2(-10+a) equation:


-12=2(-10+a)

We simplify the equation to the form, which is simple to understand 
-12=2(-10+a)

Reorder the terms in parentheses
-12=+(-20+2a)

Remove unnecessary parentheses
-12=-20+2a

We move all terms containing a to the left and all other terms to the right. 
-2a=-20+12

We simplify left and right side of the equation. 
-2a=-8

We divide both sides of the equation by -02 to get a. 
a=4

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