Bonjour vous pouvez m’aider svp il fait réaliser les opérations et simplifier

3/5×8/7

=24/35

7×3/5

=21/5

7/15×9/4

=63/60

=(63÷3)/(60÷3)

=21/20

2/9×5/7

=10/63

4×2/3

=8/3

6/5×12

=72/5

7/6×7/9

=49/54

6/10×30

=180/10

=(180÷10)/(10÷10)

=18

8/11×8/9

=64/99

Réponse :

Explications étape par étape :

3/5 ×8/7 = 24/35

7×3/5 = 21/5

7/15×9/4 = (7×3×3)/(3×5×4) = 21/20

2/9 ×5/7 = 10/63

4×2/3 = 8/3

7/6× 7/9 = 49/54

6/10× 30 = 6×3 = 18

8/11 × 8/9 = 64/99