x+15=3x-65

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Solution for x+15=3x-65 equation: 



x+15=3x-65

We move all terms to the left:

x+15-(3x-65)=0

We get rid of parentheses

x-3x+65+15=0

We add all the numbers together, and all the variables

-2x+80=0

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

-2x=-80

x=-80/-2

x=+40

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