-3(b+5)=45

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Solution for -3(b+5)=45 equation: 



-3(b+5)=45

We move all terms to the left:

-3(b+5)-(45)=0

We multiply parentheses

-3b-15-45=0

We add all the numbers together, and all the variables

-3b-60=0

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

-3b=60

b=60/-3

b=-20

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