Bonsoir les amis jais un ex de math a faire et je bloque se serai possible de maider merci a vous

Bonsoir,

B = 2/3 - 4/3 × 5/2

B = 2/3 - (4×5)/(3×2)

B = 2/3 - 20/6

B = 4/6 - 20/6

B = -16/6 = -8/3

C = 5 + (1 + 1/8) ÷ 3/4

C = 5 + 9/8 ÷ 3/4

C = 5 + 9/8 × 4/3

C = 5 + (9×4)/(8×3)

C = 5 + 36/24

C = 120/24 + 36/24

C = 156/24 = 13/2

Bonne soirée !

Réponse :

Bonsoir,

B = 2/3 - 4/3 * 5/2

B = 2/3 - (4*5/3*2)

B = 2/3 - 20/6

B = (2*2/2*3) - 20/6

B = 4/6 - 20/6

B = -16/6

B = -(2*8)/(2*3)

B = -8/3

C = 5 + (1 + 1/8)/(3/4)

C = 5 + (8*1/8*1 + 1/8)/(3/4)

C = 5 + (8/8 + 1/8)/(3/4)

C = 5 + (9/8)/(3/4)

C = 5 + (9/8)*(4/3)

C = 5 + (9*4)/(8*3)

C = 5 + 36/24

C = 5 + (12*3)/(12*2)

C = 5 + 3/2

C = (2*5)/(2*1) + 3/2

C = 10/2 + 3/2

C = 13/2