79=13+b

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Solution for 79=13+b equation: 



79=13+b

We move all terms to the left:

79-(13+b)=0

We add all the numbers together, and all the variables

-(b+13)+79=0

We get rid of parentheses

-b-13+79=0

We add all the numbers together, and all the variables

-1b+66=0

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

-b=-66

b=-66/-1

b=+66

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