(28b-9)-9(3b+4)=-4

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Solution for (28b-9)-9(3b+4)=-4 equation: 



(28b-9)-9(3b+4)=-4

We move all terms to the left:

(28b-9)-9(3b+4)-(-4)=0

We add all the numbers together, and all the variables

(28b-9)-9(3b+4)+4=0

We multiply parentheses

(28b-9)-27b-36+4=0

We get rid of parentheses

28b-27b-9-36+4=0

We add all the numbers together, and all the variables

b-41=0

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

b=41

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