a certain fraction is equivalent to 2/3. if 3 is added to numerator and 1 is added to denominator, fraction is equivalent to 3/4. what's the numerator of original fraction? 17 18 22 24 27

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$\displaystyle \dfrac{2x+3}{3x+1} = \dfrac{3}{4}$ Solve for 2x, not x (so discard 17 and 27 immediately)

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