Sagot :
Réponse :
On résout les équations suivantes
1) - 4x + 5 = -21 <=> -4x = - 21 - 5
<=> -4x = -26
<=> x = 13/2
2) - 4x - 5 = 6x + 12 <=> -5-12 = 6x +4x
<=> -17 = 10x
<=> x = - 17/10
Réponse :
On résout les équations suivantes
1) - 4x + 5 = -21 <=> -4x = - 21 - 5
<=> -4x = -26
<=> x = 13/2
2) - 4x - 5 = 6x + 12 <=> -5-12 = 6x +4x
<=> -17 = 10x
<=> x = - 17/10