Réponse :
Explications étape par étape
Bonsoir
Résoudre :
(5x + 1)(8 - x) = 0
5x + 1 = 0 ou 8 - x = 0
5x = -1 ou x = 8
x = -1/5 ou x = 8
(3x - 1) + (7 - x) = 0
3x - 1 + 7 - x = 0
2x + 6 = 0
2x = -6
x = -6/2
x = -3
(8 + 3x) - (x + 3) = 0
8 + 3x - x - 3 = 0
2x + 5 = 0
2x = -5
x = -5/2
(3 - 10x)(x + 23) = 0
3 - 10x = 0 ou x + 23 = 0
10x = 3 ou x = -23
x = 3/10 ou x = -23
6(y + 3) - 2(y - 1) = 0
6y + 18 - 2y + 2 = 0
4y + 20 = 0
4y = -20
y = -20/4
y = -5
