Réponses

2013-04-11T19:58:23+02:00

1) 5x = 15   -> x = 15/5 = 3

2) 45 = -5x   -> 45/-5 = x =  -9

3) x sur 7 = 6   -> x = 6X7 = 42

4) 3x = -24   ->  x = -24/3 = -8

5) -63 = -9x   -> -63/-9 = x = 7

6) 6x = 9 sur 4   -> x = 9 sur 4 / 6 = 3 sur 8