6a-9=3(a+1)

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Solution for 6a-9=3(a+1) equation:



6a-9=3(a+1)
We move all terms to the left:
6a-9-(3(a+1))=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 get rid of parentheses
6a-3a-3-9=0
We add all the numbers together, and all the variables
3a-12=0
We move all terms containing a to the left, all other terms to the right
3a=12
a=12/3
a=4

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