18=6a+15

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Solution for 18=6a+15 equation: 



18=6a+15

We move all terms to the left:

18-(6a+15)=0

We get rid of parentheses

-6a-15+18=0

We add all the numbers together, and all the variables

-6a+3=0

We move all terms containing a to the left, all other terms to the right

-6a=-3

a=-3/-6

a=1/2

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