Réponse :

Explications étape par étape

Bonjour

Résoudre :

5(x + 3) = 3 + (2x - 6)

5x + 15 = 3 + 2x - 6

5x - 2x = -3 - 15

3x = -18

x = -18/3

x = -6

(x + 3)/3 - (4x - 1)/6 = 3 + x/3

2(x + 3)/6 - (4x - 1)/6 = 3 + x/3

2x + 6 - 4x + 1 = 6(3 + x/3)

-2x + 7 = 18 + 2x

-18 + 7 = 2x + 2x

4x = -11

x = -11/4

x = -2,75

-2(2x - 4) = 6x - (-3 + x)

-4x + 8 = 6x + 3 - x

8 - 3 = 5x + 4x

5 = 9x

x = 5/9

4x - 2 + (5x - 1) = -3(7 - x)

4x - 2 + 5x - 1 = -21 + 3x

9x - 3x = -21 + 3

6x = -18

x = -18/6

x = -3

(x + 5)/2 - (2x - 7)/5 = 2 + 3x/10

5(x + 5)/10 - 2(2x - 7)/10 = 2 + 3x/10

5x + 25 - 4x + 14 = 10(2 + 3x/10)

x + 39 = 20 + 3x

39 - 20 = 3x - x

19 = 2x

x = 19/2

x = 9,5