3x+123=240

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Solution for 3x+123=240 equation: 



3x+123=240

We move all terms to the left:

3x+123-(240)=0

We add all the numbers together, and all the variables

3x-117=0

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

3x=117

x=117/3

x=39

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