Bonsoir,
1) On simplifie :
5(4x + 3)-11 = 3(-x-5)
20x + 15 - 11 = -3x - 15
20x + 4 = -3x - 15
2) On résout :
20x + 4 - 4 = -3x - 15 - 4
20x = -3x - 19
20x + 3x = -3x - 19 + 3x
23x = -19
23x/23 = -19/23
x = -19/23
Réponse :
Explications étape par étape :
5 (4x + 3)-11 = 3(-x-5)
20 x +15 -11 = -3x -15
20x +3x = -15 +11 -15
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Bonsoir,
1) On simplifie :
5(4x + 3)-11 = 3(-x-5)
20x + 15 - 11 = -3x - 15
20x + 4 = -3x - 15
2) On résout :
20x + 4 - 4 = -3x - 15 - 4
20x = -3x - 19
20x + 3x = -3x - 19 + 3x
23x = -19
23x/23 = -19/23
x = -19/23
Réponse :
Explications étape par étape :
5 (4x + 3)-11 = 3(-x-5)
20 x +15 -11 = -3x -15
20x +3x = -15 +11 -15
23x = -19
x = -19/23