3(x+3)+x=x+18

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Solution for 3(x+3)+x=x+18 equation: 



3(x+3)+x=x+18

We move all terms to the left:

3(x+3)+x-(x+18)=0

We add all the numbers together, and all the variables

x+3(x+3)-(x+18)=0

We multiply parentheses

x+3x-(x+18)+9=0

We get rid of parentheses

x+3x-x-18+9=0

We add all the numbers together, and all the variables

3x-9=0

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

3x=9

x=9/3

x=3

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