-3(9+b)=-18

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Solution for -3(9+b)=-18 equation: 



-3(9+b)=-18

We move all terms to the left:

-3(9+b)-(-18)=0

We add all the numbers together, and all the variables

-3(b+9)-(-18)=0

We add all the numbers together, and all the variables

-3(b+9)+18=0

We multiply parentheses

-3b-27+18=0

We add all the numbers together, and all the variables

-3b-9=0

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

-3b=9

b=9/-3

b=-3

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