51=5(3a+6)-8a

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Solution for 51=5(3a+6)-8a equation: 



51=5(3a+6)-8a

We move all terms to the left:

51-(5(3a+6)-8a)=0



We calculate terms in parentheses: -(5(3a+6)-8a), so:

5(3a+6)-8a

We add all the numbers together, and all the variables

-8a+5(3a+6)

We multiply parentheses

-8a+15a+30

We add all the numbers together, and all the variables

7a+30

Back to the equation:

-(7a+30)



We get rid of parentheses

-7a-30+51=0

We add all the numbers together, and all the variables

-7a+21=0

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

-7a=-21

a=-21/-7

a=+3

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