3(7a-8)-9=3(a+1)

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Solution for 3(7a-8)-9=3(a+1) equation: 



3(7a-8)-9=3(a+1)

We move all terms to the left:

3(7a-8)-9-(3(a+1))=0

We multiply parentheses

21a-(3(a+1))-24-9=0



We calculate terms in parentheses: -(3(a+1)), so:

3(a+1)

We multiply parentheses

3a+3

Back to the equation:

-(3a+3)



We add all the numbers together, and all the variables

21a-(3a+3)-33=0

We get rid of parentheses

21a-3a-3-33=0

We add all the numbers together, and all the variables

18a-36=0

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

18a=36

a=36/18

a=2

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