b=2.5b+45

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Solution for b=2.5b+45 equation: 



b=2.5b+45

We move all terms to the left:

b-(2.5b+45)=0

We get rid of parentheses

b-2.5b-45=0

We add all the numbers together, and all the variables

-1.5b-45=0

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

-1.5b=45

b=45/-1.5

b=-30

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