0,5x = 3,2
x = 3,2/0,5
x = 6,4
x/2 = 7
2x/2 = 7 * 2
x = 14
x/3 = 4
3x/3 = 4* 3
x = 12
2x/3 = 8
2/3 * x / 2/3 = 8/ 2/3
x = 8 * 3/2
x = 24/2