-69=7(b+4)+4(b-5)

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Solution for -69=7(b+4)+4(b-5) equation: 



-69=7(b+4)+4(b-5)

We move all terms to the left:

-69-(7(b+4)+4(b-5))=0



We calculate terms in parentheses: -(7(b+4)+4(b-5)), so:

7(b+4)+4(b-5)

We multiply parentheses

7b+4b+28-20

We add all the numbers together, and all the variables

11b+8

Back to the equation:

-(11b+8)



We get rid of parentheses

-11b-8-69=0

We add all the numbers together, and all the variables

-11b-77=0

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

-11b=77

b=77/-11

b=-7

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