Rendre ces fractions irréductibles 13/18 20/30 25/10 15/12 Merci

Bonjour,

13/18 --> Irréductible
20/30 = (10 x 2) / (10 x 3) = 2/3
25/10 = (5 x 5) / (5 x 2) = 5/2
15/12 = (3 x 5) / (3 x 4) = 5/4

Bonjour

14/18⇒(7×2)/(9×2)=7/9
20/30⇒(2×10)/(3×10)=2/3
25/10⇒(5×5)/(2×5)=5/2
15/12⇒(5×3)/(4×3)=5/4