Bonsoir,

1/5 = 1/5 * 3/3

= 3/25

1/5 < 4/15

-12/7 = -12/7 * 6/6 = -72/42

-9/6 * 7/7 = -63/42

-72/42 < -63/42

(attention,il s'agit de nbres négatifs)

7/4 *3/3 =  28/12

-8/6 * 2/2  = - 16/12

9/2 *  6/6 = 54/12

-2 * 12/12 = -24/12

-2 < -8/6 < 7/4 < 9/2