Réponses

2012-10-17T17:58:14+02:00

a) 3x -3 = 5x +4

    -2x = 7

    x = - 3.5

 

b) -1/3 +5/6 = x/3

    -2/6 +5/6 = 2x/6

    3/6 = 2x/6

 

c) 3x -6 = 2x -8 +x

    0x = -2