Réponses

2013-01-25T18:42:53+01:00

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

 

Tu isoles les x

 

3x + 5 =14x-21

3x-14x=-21-5

-11x=-26

x = 26/11

2013-01-25T18:47:39+01:00

3x +5 = 14x-21

3x-14x =-21-5

-11x = -26

x = 26/11