Mathématiques
Belladu94
1

Bonjour, besoin d'aide urgent. SVP¨merci.

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(1) Réponses
michous

Bonsoir, A = 2/3 + 5/3 A = 7/3 B = 15/3 - 2/9 B = 15 x 3 / 3 x 3 - 2/9 B = 45/9 - 2/9 B = 43/9 C = 2/4 + 3/8 + 1/2 C = 2 x 2 / 4 x 2 + 3/8 + 1 x 4 / 2 x 4 C = 4/8 + 3/8 + 4/8 C = 11/8 D = (2 + 3) x 4 + 4/12           5 + 7 D = 6 x 4 + 4/12          12 D = 24/12 + 4/12 D = 28/12 D = 4 x 7 / 4 x 3 D = 7/3 E = (2 + 5) (5 - 3) - 4/3                21     E = 7 x 2 - 4/3         21 E = 14/21 - 4/3 E = 14/21 - 4 x 7 / 3 x 7 E = 14/21 - 28/21 E = - 14/21  E = 7 x - 2 / 7 x 3 E = - 2/3

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