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how do I do this problem

  • math -

    you want to get x all by its self.

    subtract the x from both sides to give


    add 3 to both sides


    divide by 2 to isolate the x

    x = -1/2

  • math -

    I still don't understand how you got the 2x?

  • math -

    As he said, he subtracted x from both sides of the equation.
    3x - x = 2x

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