Bonjour est ce que vous pouvez m'aider s'il vous plaît ? C'est des exercices de mathématiques.. D = - 7/5 × (3 - 8/21) E = 5/3 × 3/5 - 16/45 × 35/8 F =5/7 - 2/7

Réponse :

Explications étape par étape

Bonjour

D = - 7/5 × (3 - 8/21)

D = -7/5 x [(3 x 21)/21 - 8/21]

D = -7/5 x (63/21 - 8/21)

D = -7/5 x 55/21

D = -55/5 x 7/21

D = (-11 x 5)/5 x 7/(3 x 7)

D = -11 x 1/3

D = -11/3

E = 5/3 × 3/5 - 16/45 × 35/8

E = 5/5 x 3/3 - (16/8 x 35/45)

E = 1 - [(2 x 8)/8 x (7 x 5)/(9 x 5)]

E = 1 - (2 x 7/9)

E = 9/9 - 14/9

E = -5/9

F =5/7 - 2/7 (1 - 3/4)

F = 5/7 - 2/7(4/4 - 3/4)

F = 5/7 - 2/7 x 1/4

F = 5/7 - 2/4 x 1/7

F = 5/7 - 1/2 x 1/7

F = 10/14 - 1/14

F = 9/14

G =(2 - 1/3) ÷ (5 + 5/6)

G = (6/3 - 1/3) : (30/6 + 5/6)

G = 5/3 : 35/6

G = 5/3 x 6/35

G = 5/35 x 6/3

G = 1/7 x 2

G = 2/7