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Transition to subtracting 2 fractions with equal denominators and differences greater than 1. What's 11/6 - 4/6? Their units are the same – equal denominators – so subtract their quantities or numerators. 11 sixths - 4 sixths = 7 sixths, or 1 and 1 sixth. Using fraction notation, 11/6 - 4/6 = 7/6 = 6/6 + 1/6 = 1 1/6.