8=3b-13

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Solution for 8=3b-13 equation: 



8=3b-13

We move all terms to the left:

8-(3b-13)=0

We get rid of parentheses

-3b+13+8=0

We add all the numbers together, and all the variables

-3b+21=0

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

-3b=-21

b=-21/-3

b=+7

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