comparer ces 2 fractions en detaillant les calculs : 5/12 et 8/18

5/12 = (5 x 18)/(12 x 18) = 90/216

8/18 = (8 x 12)/(18 x 12) = 96/216

Comme 90/216 < 96/216

5/12 < 8/18