15=(-3)+x

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Solution for 15=(-3)+x equation: 



15=(-3)+x

We move all terms to the left:

15-((-3)+x)=0



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

(-3)+x

determiningTheFunctionDomain
x+(-3)

We add all the numbers together, and all the variables

x-3

Back to the equation:

-(x-3)



We get rid of parentheses

-x+3+15=0

We add all the numbers together, and all the variables

-1x+18=0

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

-x=-18

x=-18/-1

x=+18

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