15b-40=5b+20

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Solution for 15b-40=5b+20 equation: 



15b-40=5b+20

We move all terms to the left:

15b-40-(5b+20)=0

We get rid of parentheses

15b-5b-20-40=0

We add all the numbers together, and all the variables

10b-60=0

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

10b=60

b=60/10

b=6

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