Réponses

2013-03-20T20:37:44+01:00

x/3 = x/4 -6/5

x/3 -x/4 = -6/5

4x/12 -3x/12 = -6/5

x/12 = -6/5

5x/60 = -72/60

5x = -72

x = -72/5

2013-03-20T23:17:55+01:00