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Réponse :

Explications étape par étape

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Résoudre les équations :

4(2 - x) + 5 = -3(2x + 3) - 12

8 - 4x + 5 = -6x - 9 - 12

13 - 4x = -6x - 21

6x - 4x = -21 - 13

2x = -34

x = -34/2

x = -17

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

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

15x + 5 = 20x - 8

5 + 8 = 20x - 15x

13 = 5x

x = 13/5

x/3 + 5/6 = 1/2 - x

x/3 + x = 1/2 - 5/6

x/3 + 3x/3 = 3/6 - 5/6

4x/3 = -2/6

x = -2/6 * 3/4

x = -1/3 * 3/4

x = -1/4

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

x - x - 1 = x + 3 - x + 3

-1 = 6

Impossible x n’a pas de solution