13=1-(-3x)

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Solution for 13=1-(-3x) equation: 



13=1-(-3x)

We move all terms to the left:

13-(1-(-3x))=0



We calculate terms in parentheses: -(1-(-3x)), so:

1-(-3x)

determiningTheFunctionDomain
-(-3x)+1

We get rid of parentheses

3x+1

Back to the equation:

-(3x+1)



We get rid of parentheses

-3x-1+13=0

We add all the numbers together, and all the variables

-3x+12=0

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

-3x=-12

x=-12/-3

x=+4

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