-138=2(-5-8b)

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Solution for -138=2(-5-8b) equation: 



-138=2(-5-8b)

We move all terms to the left:

-138-(2(-5-8b))=0

We add all the numbers together, and all the variables

-(2(-8b-5))-138=0



We calculate terms in parentheses: -(2(-8b-5)), so:

2(-8b-5)

We multiply parentheses

-16b-10

Back to the equation:

-(-16b-10)



We get rid of parentheses

16b+10-138=0

We add all the numbers together, and all the variables

16b-128=0

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

16b=128

b=128/16

b=8

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