a=2(3a-9)-7

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



a=2(3a-9)-7

We move all terms to the left:

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



We calculate terms in parentheses: -(2(3a-9)-7), so:

2(3a-9)-7

We multiply parentheses

6a-18-7

We add all the numbers together, and all the variables

6a-25

Back to the equation:

-(6a-25)



We get rid of parentheses

a-6a+25=0

We add all the numbers together, and all the variables

-5a+25=0

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

-5a=-25

a=-25/-5

a=+5

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