Пошаговое объяснение:

-35/72с * 3 3/7d = (-35/72 * 3 3/7) * c * d =

(-35/72 * 24/7) * c * d = (-5/3 * 1/1) * c * d = -5/3cd

c = -1 1/5; d = -2 2/3

-5/3cd = -5/3 * (-1 1/5) * (-2 2/3) =

-(5/3 * 6/5 * 8/3) = -16/3 = -5 1/3