3x-42+42=12+42

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Solution for 3x-42+42=12+42 equation: 



3x-42+42=12+42

We move all terms to the left:

3x-42+42-(12+42)=0

We add all the numbers together, and all the variables

3x-42+42-54=0

We add all the numbers together, and all the variables

3x-54=0

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

3x=54

x=54/3

x=18

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