26=-2(21-b)+3*(b-4)

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Solution for 26=-2(21-b)+3*(b-4) equation: 



26=-2(21-b)+3(b-4)

We move all terms to the left:

26-(-2(21-b)+3(b-4))=0

We add all the numbers together, and all the variables

-(-2(-1b+21)+3(b-4))+26=0



We calculate terms in parentheses: -(-2(-1b+21)+3(b-4)), so:

-2(-1b+21)+3(b-4)

We multiply parentheses

2b+3b-42-12

We add all the numbers together, and all the variables

5b-54

Back to the equation:

-(5b-54)



We get rid of parentheses

-5b+54+26=0

We add all the numbers together, and all the variables

-5b+80=0

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

-5b=-80

b=-80/-5

b=+16

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