To solve for x, first multiply both sides of the equation by 3 to get rid of the fraction:
3(3-5/3x) = 3(18)
9 - 5x = 54
Next, subtract 9 from both sides of the equation:
-5x = 45
Finally, divide both sides by -5 to solve for x:
x = -9
3-5/3x =18
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