-13=b/7+-20

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



-13=b/7+-20

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-b/7+20-13=0

We multiply all the terms by the denominator


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

We add all the numbers together, and all the variables

-1b+49=0

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

-b=-49

b=-49/-1

b=+49

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