Réponses

2013-05-15T16:04:00+02:00

4x -8 = 11x+5

4x-8+8-11x =11x+5+8-11x

4x-11x = 5+8 

-7x = 13 

 

-7x diviser par -7 = x

13 diviser par -7 = 6 

 

donc x=6 

 

 

 

2013-05-15T16:13:28+02:00
1) X = 13/-7 2) 5/8x = -3/10 5x = (-3/10)*8 X = ((-3/10)* 8)/5