15=7a-4a+12a

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Solution for 15=7a-4a+12a equation:


15=7a-4a+12a

We simplify the equation to the form, which is simple to understand 
15=7a-4a+12a

We move all terms containing a to the left and all other terms to the right. 
-7a+4a-12a=-15

We simplify left and right side of the equation. 
-15a=-15

We divide both sides of the equation by -15 to get a. 
a=1

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