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= - 3 5/8 - 7 6/8 + 3 1/2 : (- 1 1/2) = - 10 11/8 + 3 4/8 : (- 1 1/2) = - 7 7/8 : (- 1 1/2) = - 63/8 * ( - 2/3) = 63/8 * 2/3 = 21/4 = 5 1/4