(2x+6)+x=42

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Solution for (2x+6)+x=42 equation: 



(2x+6)+x=42

We move all terms to the left:

(2x+6)+x-(42)=0

We add all the numbers together, and all the variables

x+(2x+6)-42=0

We get rid of parentheses

x+2x+6-42=0

We add all the numbers together, and all the variables

3x-36=0

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

3x=36

x=36/3

x=12

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