69=9(b-1)-3

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Solution for 69=9(b-1)-3 equation: 



69=9(b-1)-3

We move all terms to the left:

69-(9(b-1)-3)=0



We calculate terms in parentheses: -(9(b-1)-3), so:

9(b-1)-3

We multiply parentheses

9b-9-3

We add all the numbers together, and all the variables

9b-12

Back to the equation:

-(9b-12)



We get rid of parentheses

-9b+12+69=0

We add all the numbers together, and all the variables

-9b+81=0

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

-9b=-81

b=-81/-9

b=+9

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