2x=126-x

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Solution for 2x=126-x equation: 



2x=126-x

We move all terms to the left:

2x-(126-x)=0

We add all the numbers together, and all the variables

2x-(-1x+126)=0

We get rid of parentheses

2x+1x-126=0

We add all the numbers together, and all the variables

3x-126=0

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

3x=126

x=126/3

x=42

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