20=3+13b/7

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Solution for 20=3+13b/7 equation: 



20=3+13b/7

We move all terms to the left:

20-(3+13b/7)=0

We add all the numbers together, and all the variables

-(13b/7+3)+20=0

We get rid of parentheses

-13b/7-3+20=0

We multiply all the terms by the denominator


-13b-3*7+20*7=0

We add all the numbers together, and all the variables

-13b+119=0

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

-13b=-119

b=-119/-13

b=9+2/13

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