(28b-1)-9(3b+1)=-7

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Solution for (28b-1)-9(3b+1)=-7 equation: 



(28b-1)-9(3b+1)=-7

We move all terms to the left:

(28b-1)-9(3b+1)-(-7)=0

We add all the numbers together, and all the variables

(28b-1)-9(3b+1)+7=0

We multiply parentheses

(28b-1)-27b-9+7=0

We get rid of parentheses

28b-27b-1-9+7=0

We add all the numbers together, and all the variables

b-3=0

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

b=3

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