x+2x+18=123

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Solution for x+2x+18=123 equation: 



x+2x+18=123

We move all terms to the left:

x+2x+18-(123)=0

We add all the numbers together, and all the variables

3x-105=0

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

3x=105

x=105/3

x=35

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