639=375+12a

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Solution for 639=375+12a equation:


639=375+12a

We simplify the equation to the form, which is simple to understand 
639=375+12a

We move all terms containing a to the left and all other terms to the right. 
-12a=+375-639

We simplify left and right side of the equation. 
-12a=-264

We divide both sides of the equation by -012 to get a. 
a=22

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