3x+15=x+39

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Solution for 3x+15=x+39 equation: 



3x+15=x+39

We move all terms to the left:

3x+15-(x+39)=0

We get rid of parentheses

3x-x-39+15=0

We add all the numbers together, and all the variables

2x-24=0

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

2x=24

x=24/2

x=12

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