Bonjour Exercice 1 Résoudre les équations suivantes : 4x – 3 = 11 10+ 12y = 7y - 5 4t – 3 = - 10t + 4 2(x-7)=3(-x+1) (x - 1)(x + 3) = (x + 5)(x-4) Pouvez vous m

Réponse :

bonjour

Explications étape par étape :

4x – 3 = 11

4x =11+3

4x=14

x=14/4

x=7/2

10+ 12y = 7y - 5

12y-7y = -5 -10

5y = -15

y=-15/5

y=-3

4t – 3 = - 10t + 4

4t+10t = 4+3

14t = 7

t =7/14

t=1/2

2(x-7)=3(-x+1)

2x-14 = -3x+3

2x+3x =3+14

5x = 17

x= 17/5

(x - 1)(x + 3) = (x + 5)(x-4)

x²+3x-3-3x = x²-4x+5x-20

x²-x²+3x -3x+4x-5x = -20 +3

-x = -17

x= 17