45=5-8b

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Solution for 45=5-8b equation: 



45=5-8b

We move all terms to the left:

45-(5-8b)=0

We add all the numbers together, and all the variables

-(-8b+5)+45=0

We get rid of parentheses

8b-5+45=0

We add all the numbers together, and all the variables

8b+40=0

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

8b=-40

b=-40/8

b=-5

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