Sagot :
Bonsoir,
Calcule pour x = 5
B = 20x
B = 20 * 5
B = 100
Z = 9x
Z = 9 * 5
Z = 45
Calcule pour y = 10:
M = 5y + 3
M = 5 * 10 + 3
M = 50 + 3
M = 53
A = 8y - 25
A = 8 * 10 - 25
A = 80 - 25
A = 55
* = multiplication
Bonne soirée.
Réponse :
a) B = 20x
B = 20 × 5
B = 100
Z = 9x
Z = 9 × 5
Z = 45
b) M = 5y + 3
M = 5 × 10 + 3
M = 50 + 3
M = 53
A = 8y - 25
A = 8 × 10 - 25
A = 80 - 25
A = 55
Explications étape par étape :