Question 495794
This is pretty straightforward.  Create the equality from the words:
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3X = X - 4
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Solve for X by grouping all the "X" terms on one side.  Do that by subtracting X from both sides:
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2X = -4
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Divide by sides by 2 so we end with just the X term by itself:
  X = -2
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check your work:
3(-2) = -2 -4
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-6 = -6