Réponse :
Explications étape par étape
Bonsoir
(2x + 1)/(-3 + x) = 3/2
[tex]-3 + x \ne 0[/tex]
[tex]x \ne 3[/tex]
2(2x + 1) = 3(-3 + x)
4x + 2 = -9 + 3x
4x - 3x = -9 - 2
x = -11
14/-6 = 18/-2x
[tex]-2x \ne 0[/tex]
[tex]x \ne 0[/tex]
-2x * 14 = 18 * (-6)
-28x = -108
x = -108/-28
x = (27 * 4)/(7 * 4)
x = 27/7
Exercice 11 :
L = (3x - 2)/6 + (7x + 5)/12
L = 2(3x - 2)/(2 * 6) + (7x + 5)/12
L = (6x - 4)/12 + (7x + 5)/12
L = (6x - 3 + 7x + 5)/12
L = (13x + 2)/12
Calculer L pour x = 2/13
L = (13 * 2/13 + 2)/12
L = (2 + 2)/12
L = 4/12
L = 4/(3 * 4)
L = 1/3
