Réponse : 11/12 et 20
Explications étape par étape :
A = 8/3 - 5/3 / 20/21
= 8/3 - 5/3 * 21/20
= 8/3 - 105/60
=160/60 - 105/60
=55/60
=11/12
B= (2+2/3)/(4/5-2/3)
=(6/3+2/3)/(20/15-10/15)
=8/3/2/15
=20
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Réponse : 11/12 et 20
Explications étape par étape :
A = 8/3 - 5/3 / 20/21
= 8/3 - 5/3 * 21/20
= 8/3 - 105/60
=160/60 - 105/60
=55/60
=11/12
B= (2+2/3)/(4/5-2/3)
=(6/3+2/3)/(20/15-10/15)
=8/3/2/15
=20