-3(6+3b)=18

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Solution for -3(6+3b)=18 equation: 



-3(6+3b)=18

We move all terms to the left:

-3(6+3b)-(18)=0

We add all the numbers together, and all the variables

-3(3b+6)-18=0

We multiply parentheses

-9b-18-18=0

We add all the numbers together, and all the variables

-9b-36=0

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

-9b=36

b=36/-9

b=-4

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