Bonjour
Calculer et donner le résultat sous forme irréductible
A) 5/14 × -7/3 = - 35/42 = (7 x - 5) / (7 x 6) = - 5/6
B) 4/15 × 35/24 = 140/360= (20 x 7 / (20 x 18) = 7/18
C) 7/8 × 1/2 = 7/16
D) 2/3 × 5/8 = 10/24 = (2 x 5) / (2 x 12) = 5/12
E ) 12/7 × 4/9 = 48/63 = (3 x 16 / (3 x 21 = 16/21.
