-3.5b+81=90

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Solution for -3.5b+81=90 equation: 



-3.5b+81=90

We move all terms to the left:

-3.5b+81-(90)=0

We add all the numbers together, and all the variables

-3.5b-9=0

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

-3.5b=9

b=9/-3.5

b=-2+2/3.5

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