Réponse :
Explications étape par étape
Bonjour
Exercice 3
A = 2×(x+3)
A= 2×x + 2×3
A = 2x + 6
B = 2,5×(4-y)
B = 2,5×4 - 2,5×y
B = 10 - 2,5y
C = (6 + 2t)×4
C = 6×4 + 2t×4
C = 24 + 8t
D = 3,2(b-10)
D = 3,2×b - 3,2×10
D = 3,2b - 32
Exercice 4
E = 2 × a + 2 × b
E = 2(a + b)
F = 3,5 × x − y × 3,5
F = 3,5( x - y )
G = 7b − ab
G = 7×b − a×b
G = b(7 - a)
H = 12 + 6b
H = 6×2 + 6×b
H = 6(2 + b)
