139=1-6(-7a-2)

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Solution for 139=1-6(-7a-2) equation: 



139=1-6(-7a-2)

We move all terms to the left:

139-(1-6(-7a-2))=0



We calculate terms in parentheses: -(1-6(-7a-2)), so:

1-6(-7a-2)

determiningTheFunctionDomain
-6(-7a-2)+1

We multiply parentheses

42a+12+1

We add all the numbers together, and all the variables

42a+13

Back to the equation:

-(42a+13)



We get rid of parentheses

-42a-13+139=0

We add all the numbers together, and all the variables

-42a+126=0

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

-42a=-126

a=-126/-42

a=+3

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