Réponse :

Explications étape par étape

Bonjour

Effectuer les calculs

A = 1/5 x -4/3 + 7/2

A = -4/15 + 7/2

A = -8/30 + 105/15

A = 97/15

B = 4/5 x (-3/7) - 7/10

B = -12/35 - 7/10

B = -24/70 - 49/70

B = -73/70

C = 13/7 + (-8/7) x (-4/5)

C = 13/7 + 32/35

C = 65/35 + 32/35

C = 97/35

D = 7/3 + 3/2 x -10/21

D = 7/3 + 3/21 x -10/2

D = 7/3 - 1/7 x 5

D = 7/3 - 5/7

D = 49/21 - 15/21

D = 34/21

E = 5/8 + (-3/4) x (-9/16)

E = 5/8 + 27/64

E = 40/64 + 27/64

E = 67/64

F = 6/5 - (-1/9) x (-3/4)

F = 6/5 - 3/9 x 1/4

F = 6/5 - 1/3 x 1/4

F = 6/5 - 1/12

F = 72/60 - 5/60

F = 67/60