Salut !
4/8 = (4×1)/(4×2) = 1/2
5/35 = (5×1)/(5×7) = 1/7
15/30 = (15×1)/(15×2) = 1/2
10/100 = (10×1)/(10×10) = 1/10
52/91 = (13×4)/(13×7) = 4/7
75/100 = (25×3)/(25×4) = 3/4
468/180 = (36×13)/(36×5) = 13/5
60/100 = (20×3)/(20×5) = 3/5
216/948 = (12×18)/(12×79) = 18/79
1620/1350 = (270×6)/(270×5) = 6/5
