20=-7-b/4

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Solution for 20=-7-b/4 equation: 



20=-7-b/4

We move all terms to the left:

20-(-7-b/4)=0

We add all the numbers together, and all the variables

-(-b/4-7)+20=0

We get rid of parentheses

b/4+7+20=0

We multiply all the terms by the denominator


b+7*4+20*4=0

We add all the numbers together, and all the variables

b+108=0

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

b=-108

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