1/2 : 13 = 1/3x : 4 1/3
1/2 * 1/13 = 1/3x : 4 1/3
1/3x : 4 1/3 = 1/26
1/3x = 1/26 * 4 1/3
1/3x = 1/26 * 13/3
1/3x = 1/6
x = 1/6 : 1/3
x = 1/6 * 3
x = 1/2
x = 0,5
ответ: 0,5
1/2 : 13 = 1/3x : 4 1/3
1/2 * 1/13 = 1/3x : 4 1/3
1/3x : 4 1/3 = 1/26
1/3x = 1/26 * 4 1/3
1/3x = 1/26 * 13/3
1/3x = 1/6
x = 1/6 : 1/3
x = 1/6 * 3
x = 1/2
x = 0,5
ответ: 0,5