Bonsoir,

Ex. 33 :

a) 5 × 4/3 = (5×4)/3 = 20/3

b) 9/5 × 2 = (9×2)/5 = 18/5

c) 1,2 × 5/7 = (1,2×5)/7 = 6/7

d) 1/4 × 7 = (1×7)/4 = 7/4

e) 4/6 × 11 = 2/3 × 11 = (2×11)/3 = 22/3

f) 2 × 2/9 = (2×2)/9 = 4/9

Ex. 34 :

a) 7 × 15/5 = (7×15)/5 = (7×3×5)/5 = 7×3 = 21

b) 12 × 14/3 = (12×14)/3 = (3×4×14)/3 = 4×14 = 56

c) 25 × 6/5 = (25×6)/5 = (5×5×6)/5 = 5×6 = 30