21b-30=45+74b

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Solution for 21b-30=45+74b equation: 



21b-30=45+74b

We move all terms to the left:

21b-30-(45+74b)=0

We add all the numbers together, and all the variables

21b-(74b+45)-30=0

We get rid of parentheses

21b-74b-45-30=0

We add all the numbers together, and all the variables

-53b-75=0

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

-53b=75

b=75/-53

b=-1+22/53

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