avec * = multiplié par
6*x = - 2
6*x/6 = -2/6
x = -2/6
x = -1/3
0,3 est faux...
3*x = - 9
3x/3 = -9/3
x = -3
-8*x = 2
-8x/(-8) = 2/(-8)
x = -2/8
x = -1/4
2/3*x * 3/2 = 2/5 * 3/2 (2/3 * 3/2 = 1)
x = 6/10
x = 3/5
8*x = 26
8x/8 = 26/8
x = 13/4
5*x = -1
5x/5 = - 1/5
x = -1/5
-2x = 10
-2x/(-2) = 10/(-2)
x = -5
3/10*x = 5/6
3/10*x*10/3 = 5/6 * 10/3
x = 50/18
x = 25/9
