3a-9=3(2a+5)

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Solution for 3a-9=3(2a+5) equation: 



3a-9=3(2a+5)

We move all terms to the left:

3a-9-(3(2a+5))=0



We calculate terms in parentheses: -(3(2a+5)), so:

3(2a+5)

We multiply parentheses

6a+15

Back to the equation:

-(6a+15)



We get rid of parentheses

3a-6a-15-9=0

We add all the numbers together, and all the variables

-3a-24=0

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

-3a=24

a=24/-3

a=-8

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