Réponse:
Bonsoir
Explications étape par étape:
A = 4/7 - 2 ÷ 2 - 11/14
= 4/7 - 14/7 ÷ 28/14 - 11/14
= -10/7 ÷ 17/14
= -10/7 × 14/17
A = -140/119
B = 12/5 - 3/5 × 7/9
= 12/5 - 21/45
= 108/45 - 21/45
B = 87/45
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Réponse:
Bonsoir
Explications étape par étape:
A = 4/7 - 2 ÷ 2 - 11/14
= 4/7 - 14/7 ÷ 28/14 - 11/14
= -10/7 ÷ 17/14
= -10/7 × 14/17
A = -140/119
B = 12/5 - 3/5 × 7/9
= 12/5 - 21/45
= 108/45 - 21/45
B = 87/45