3a-7=5(a+1)+9a+2

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Solution for 3a-7=5(a+1)+9a+2 equation: 



3a-7=5(a+1)+9a+2

We move all terms to the left:

3a-7-(5(a+1)+9a+2)=0



We calculate terms in parentheses: -(5(a+1)+9a+2), so:

5(a+1)+9a+2

We add all the numbers together, and all the variables

9a+5(a+1)+2

We multiply parentheses

9a+5a+5+2

We add all the numbers together, and all the variables

14a+7

Back to the equation:

-(14a+7)



We get rid of parentheses

3a-14a-7-7=0

We add all the numbers together, and all the variables

-11a-14=0

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

-11a=14

a=14/-11

a=-1+3/11

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