Sagot :
Explications étape par étape:
a) 5/6+4/6=9/6
=3/2
b)3/8-2/8=1/8
c)5/6×7/5×2 (tu barres les deux 5)
= 1/6×5/2
=5/12
d) 10/9 ×3/2
=5×2/9 x3/2 (tu barres les deux 2)
=5/9×3/1
=15/9
e) 5/3-2/3×4/7
(on applique la règle des priorités)
=5/3-8/21
=105/63-24/63
=81/63
=9/7
(table de 8)
Bonjour
5/6 + 2/3 = 5/6 + 4/6 = 9 /6 = 3/2
3/8 - 1/4 = 3/8 - 2/8 = 1 /8
5 /6 * 7/10 = 35/60 = 7/12
10/9 : 2/3 = 10/9 x 3/2 = 30 /18 = 5/3
5/3 - 2/3 x 4/7 = 5/3 - 8 /21 = 35/21 - 8/21 = 27/21 = 9/7