8=15-42/b

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Solution for 8=15-42/b equation: 



8=15-42/b

We move all terms to the left:

8-(15-42/b)=0



Domain of the equation: b)!=0

b!=0/1

b!=0

b∈R



We add all the numbers together, and all the variables

-(-42/b+15)+8=0

We get rid of parentheses

42/b-15+8=0

We multiply all the terms by the denominator


-15*b+8*b+42=0

We add all the numbers together, and all the variables

-7b+42=0

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

-7b=-42

b=-42/-7

b=+6

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