18=-13+x

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Solution for 18=-13+x equation: 



18=-13+x

We move all terms to the left:

18-(-13+x)=0

We add all the numbers together, and all the variables

-(x-13)+18=0

We get rid of parentheses

-x+13+18=0

We add all the numbers together, and all the variables

-1x+31=0

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

-x=-31

x=-31/-1

x=+31

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