Bonsoir, voici la réponse à ton exercice :
N°1 :
T = 9 / [(9 - 5) - 1]
= 9 / (4 - 1)
= 9 / 3
= 3
U = 17 - [3 + (7 x 2)]
= 17 - (3 + 14)
= 17 - 17
= 0
V = 4 x [(18 + 5) - 2]
= 4 x 21
= 84
W = [2 + (9 x 3)] - 8
= 29 - 8
= 21
X = [(16 - 1) / 3] + 7
= (15/3) + 7
= 5 + 7
= 12
Y = [(8 + 6) x 2] / 7
= 28 / 7
= 4
N°2 :
a. 4 x 3 - 5 - 2 = 5
→ 4 x 3 - 5 - 2 = 5 donc pas besoin de parenthèses
b. 8 - 3 x 6 + 4 = 50
→ ( 8 - 3 ) x ( 6 + 4 ) = 5 x 10 = 50
c. 3 + 16 x 8 / 2 = 76
→ ( 3 + 16 ) x ( 8 / 2 ) = 19 x 4 = 76
d. 12 + 4 x 7 / 2 = 20
→ ( 12 + 4 x 7 ) / 2 = ( 12 + 28 ) / 2 = 40 / 2 = 20
e. 14 x 4 + 7 / 2 = 77
→ [14 x ( 4 + 7)] / 2 = ( 14 x 11 ) / 2 = 154 / 2 = 77
N°3 :
a. 23 - 6 ? 2 - 6 = 5
→ 23 - 6 x 2 - 6 = 5
b. 4 ? 1 x 8 - 25 = 7
→ 4 x 1 x 8 - 25 = 7
c. 9 ? (7 - 5) x 4 = 1
→ 9 - (7 - 5) x 4 = 1
d. 3 ? 5 - 2 ? 7 = 1
→ 3 x 5 - 2 x 7 = 1
En espérant t'avoir aidé au maximum !
