Réponse:
Salut
a) 7/4 et 17/12
7/4 = (7×3)/(4×3)=21/12
7/4 > 17/12
b) 8/5 et 47/30
8/5 = (8×6)/(5×6) = 48/30
8/5 > 47/30
c) 3/7 et 5/14
3/7 =(3×2)/(7×2)=6/14
3/7 >5/14
d) -10/7 et -3/2
-10/7 = (-10×2)/(7×2) = -20/14
-3/2 = (-3×7)/(7×2) = -21/14
-10/7 > -3/2
e) -5/6 et -7/9
-5/6 = (-5×3)/(6×3) = -15/18
-7/9 = (-7×2)/(9×2) = -14/18
-5/6 < -7/9
f) -4/15 et -6/25
-4/15 = (-4×5)/(5×15) = -20/75
-6/25 = (-6×3)/(25×3) = -18/75
-4/15 < -6/25
