9b+4.5(180-b)=180

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Solution for 9b+4.5(180-b)=180 equation: 



9b+4.5(180-b)=180

We move all terms to the left:

9b+4.5(180-b)-(180)=0

We add all the numbers together, and all the variables

9b+4.5(-1b+180)-180=0

We multiply parentheses

9b-4.5b+810-180=0

We add all the numbers together, and all the variables

4.5b+630=0

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

4.5b=-630

b=-630/4.5

b=-140

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