7=2(a-3)=-9

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



7=2(a-3)=-9

We move all terms to the left:

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



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

2(a-3)

We multiply parentheses

2a-6

Back to the equation:

-(2a-6)



We get rid of parentheses

-2a+6+7=0

We add all the numbers together, and all the variables

-2a+13=0

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

-2a=-13

a=-13/-2

a=6+1/2

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