(-5) * 2/3 = - 10/3 = - 3 1/3
7 * (- 1 1/2) = 7 * (-3/2) = - 21/2 = - 10 1/2
(- 3) * (- 1 1/4) = (- 3) * - (5/4) = 15/4 = 3 3/4
(- 2 3/4) * (- 1 1/7) = (-11/4) * (- 8/7) = 88/28 = 3 4/28 = 3 1/7
(- 1 1/3 * 2 2/5 = ( - 4/3) * (12/5) = - 48/15 = - 3 3/15 = - 3 1/5
4 1/2 * (- 5 1/3) = 9/2 * (- 16/3) = - 144/6 = - 24