15=-3(7b+4)+8(8-2b)

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Solution for 15=-3(7b+4)+8(8-2b) equation: 



15=-3(7b+4)+8(8-2b)

We move all terms to the left:

15-(-3(7b+4)+8(8-2b))=0

We add all the numbers together, and all the variables

-(-3(7b+4)+8(-2b+8))+15=0



We calculate terms in parentheses: -(-3(7b+4)+8(-2b+8)), so:

-3(7b+4)+8(-2b+8)

We multiply parentheses

-21b-16b-12+64

We add all the numbers together, and all the variables

-37b+52

Back to the equation:

-(-37b+52)



We get rid of parentheses

37b-52+15=0

We add all the numbers together, and all the variables

37b-37=0

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

37b=37

b=37/37

b=1

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