18=13+q

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Solution for 18=13+q equation: 



18=13+q

We move all terms to the left:

18-(13+q)=0

We add all the numbers together, and all the variables

-(q+13)+18=0

We get rid of parentheses

-q-13+18=0

We add all the numbers together, and all the variables

-1q+5=0

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

-q=-5

q=-5/-1

q=+5

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