Bonjour bonsoir vous pouvez m'aider pour mon exercice de maths svp

bonjour
A = 1/5 * 1/5 = 1 /25
B = 2/3 * 3 = 6/3 = 2
C = - 3/7 * - 7 = 21 /7 = 3
D = - 8 * 8 = - 64
C = - 3 * 4/4 = - 12 /4 = - 3
D = - 25/6 * 4/5 = - 100/30 = - 10/3