-3b+8=20

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Solution for -3b+8=20 equation: 



-3b+8=20

We move all terms to the left:

-3b+8-(20)=0

We add all the numbers together, and all the variables

-3b-12=0

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

-3b=12

b=12/-3

b=-4

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