Sagot :
Réponse :
bonjour
E= 3+ (10x + 2) = 3 + 10 x + 2 = 10 x + 5
F= (6-x) -7 = 6 - x - 7 = - x - 1
G= 5+(3-7x) = 5 + 3 - 7 x = - 7 x + 8
H= (9x-4) + 8 = 9 x - 4 + 8 = 9 x + 4
J= (6x + 9) + (-8x -2) = 6 x + 9 - 8 x - 2 = - 2 x + 7
Explications étape par étape
Bonjour,
E = 3 + (10x + 2)
E = 3 + 10x + 2 = 10x + 5
F = (6 - x) - 7
F = 6 - x - 7 = -x - 1
G = 5 + (3 - 7x)
G = 5 + 3 - 7x = -7x + 8
H = (9x - 4) + 8
H = 9x - 4 + 8 = 9x + 4
J = (6x + 9) + (-8x - 2)
J = 6x + 9 - 8x - 2 = -2x + 7
Bonne journée !