Réponse :
Explications étape par étape
Bonjour
(x - 1)/2x = 0
x - 1 = 0
x = 1
(x + 2)/(x - 4) = 0
x + 2 = 0
x = -2
(5x + 3)/(3x - 4) = 0
5x + 3 = 0
5x = -3
x = -3/5
(x + 7)/(x - 3) = (3x + 1)/(x - 3)
(x + 7)(x - 3) = (3x + 1)(x - 3)
(x + 7)(x - 3) - (3x + 1)(x - 3) = 0
(x - 3)(x + 7 - 3x - 1) = 0
(x - 3)(-2x + 6) = 0
(x - 3) * 2(-x + 3) = 0
-x + 3 = 0
x = 3
Pas de solution comme x # 3 valeur interdite