28=b(-7)

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Solution for 28=b(-7) equation: 



28=b(-7)

We move all terms to the left:

28-(b(-7))=0



We calculate terms in parentheses: -(b(-7)), so:

b(-7)

We multiply parentheses

-7b

Back to the equation:

-(-7b)



We get rid of parentheses

7b+28=0

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

7b=-28

b=-28/7

b=-4

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