27b-9=45b-45

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Solution for 27b-9=45b-45 equation: 



27b-9=45b-45

We move all terms to the left:

27b-9-(45b-45)=0

We get rid of parentheses

27b-45b+45-9=0

We add all the numbers together, and all the variables

-18b+36=0

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

-18b=-36

b=-36/-18

b=+2

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