18=-20-b

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Solution for 18=-20-b equation: 



18=-20-b

We move all terms to the left:

18-(-20-b)=0

We add all the numbers together, and all the variables

-(-1b-20)+18=0

We get rid of parentheses

1b+20+18=0

We add all the numbers together, and all the variables

b+38=0

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

b=-38

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