-54=-12-3x

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Solution for -54=-12-3x equation: 



-54=-12-3x

We move all terms to the left:

-54-(-12-3x)=0

We add all the numbers together, and all the variables

-(-3x-12)-54=0

We get rid of parentheses

3x+12-54=0

We add all the numbers together, and all the variables

3x-42=0

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

3x=42

x=42/3

x=14

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