18=6(5-a)

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Solution for 18=6(5-a) equation: 



18=6(5-a)

We move all terms to the left:

18-(6(5-a))=0

We add all the numbers together, and all the variables

-(6(-1a+5))+18=0



We calculate terms in parentheses: -(6(-1a+5)), so:

6(-1a+5)

We multiply parentheses

-6a+30

Back to the equation:

-(-6a+30)



We get rid of parentheses

6a-30+18=0

We add all the numbers together, and all the variables

6a-12=0

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

6a=12

a=12/6

a=2

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