Répondre :

hirondelle52

Bonjour;

42 -14x -12x -3=0

42-3 = 14x+12x

39 = 26x

x = 39/26

10x +40 +14x -21 = 7

10x+14x = 7-40+21

24x = -12

x = -12/24

x = -1/2

D'autres questions