9a=2(a+3)+2(a+7)

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Solution for 9a=2(a+3)+2(a+7) equation: 



9a=2(a+3)+2(a+7)

We move all terms to the left:

9a-(2(a+3)+2(a+7))=0



We calculate terms in parentheses: -(2(a+3)+2(a+7)), so:

2(a+3)+2(a+7)

We multiply parentheses

2a+2a+6+14

We add all the numbers together, and all the variables

4a+20

Back to the equation:

-(4a+20)



We get rid of parentheses

9a-4a-20=0

We add all the numbers together, and all the variables

5a-20=0

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

5a=20

a=20/5

a=4

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