12-3(x+1)=30

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Solution for 12-3(x+1)=30 equation: 



12-3(x+1)=30

We move all terms to the left:

12-3(x+1)-(30)=0

We add all the numbers together, and all the variables

-3(x+1)-18=0

We multiply parentheses

-3x-3-18=0

We add all the numbers together, and all the variables

-3x-21=0

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

-3x=21

x=21/-3

x=-7

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