Bonjour
Calcule les produits suivants sous forme de fractions simplifiées
A:3/8×7/4=
a = (3 x 7)/(8 x 4)
A = 21/32
B:11/4×3/5=
B = (11 x 3)/(4 x 5)
B = 33/20
C:21/20×5/7=
C = (21 x 5)/(20 x 7)
C = (3 x 7 x 5)/(4 x 5 x 7)
C = (3 x 35)/(4 x 35)
C = 3/4
D:15/42×2/5=
D = (15 x 2)/(42 x 5)
D = (3 x 5 x 2)/(3 x 2 x 7 x 5)
D = 30/(30 x 7)
D = 1/7
E:44/15×27/32×4/21=
E = (44 x 27 x 4)/(15 x 32 x 21)
E = (4 x 11 x 3 x 3 x 3 x 4)/(3 x 5 x 2 x 4 x 4 x 3 x 7)
E = (144 x 33)/(144 x 70)
E = 33/70
