3x+15=120

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Solution for 3x+15=120 equation: 



3x+15=120

We move all terms to the left:

3x+15-(120)=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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