-15b-40=23-8b

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Solution for -15b-40=23-8b equation: 



-15b-40=23-8b

We move all terms to the left:

-15b-40-(23-8b)=0

We add all the numbers together, and all the variables

-15b-(-8b+23)-40=0

We get rid of parentheses

-15b+8b-23-40=0

We add all the numbers together, and all the variables

-7b-63=0

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

-7b=63

b=63/-7

b=-9

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