(3x-15)=x+15

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Solution for (3x-15)=x+15 equation: 



(3x-15)=x+15

We move all terms to the left:

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

We get rid of parentheses

3x-x-15-15=0

We add all the numbers together, and all the variables

2x-30=0

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

2x=30

x=30/2

x=15

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