Réponse :
Explications étape par étape
Bonjour
3/5 x + 6 = -x - 4
3/5 x + x = -4 - 6
3/5 x + 5/5 x = -10
8/5 x = -10
x = -10 * 5/8
x = -5 * 5/4
x = -25/4
(5x - 7)/3 = 5/6
6(5x - 7) = 3 * 5
30x - 42 = 15
30x = 15 + 42
x = 57/30
x = (19 * 3)/(10 * 3)
x = 19/10
(x + 5)/(2x - 3) = 3/2
Avec : 2x - 3 # 0
2x # 3
x # 3/2
2(x + 5) = 3(2x - 3)
2x + 10 = 6x - 9
10 + 9 = 6x - 2x
19 = 4x
x = 19/4
(x + 2)(4x - 3) = 0
x + 2 = 0 ou 4x - 3 = 0
x = -2 ou 4x = 3
x = -2 ou x = 3/4
