2a+5+7a=3(a+1)

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Solution for 2a+5+7a=3(a+1) equation: 



2a+5+7a=3(a+1)

We move all terms to the left:

2a+5+7a-(3(a+1))=0

We add all the numbers together, and all the variables

9a-(3(a+1))+5=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

9a-3a-3+5=0

We add all the numbers together, and all the variables

6a+2=0

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

6a=-2

a=-2/6

a=-1/3

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