3x-15=x+31

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Solution for 3x-15=x+31 equation: 



3x-15=x+31

We move all terms to the left:

3x-15-(x+31)=0

We get rid of parentheses

3x-x-31-15=0

We add all the numbers together, and all the variables

2x-46=0

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

2x=46

x=46/2

x=23

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