0,5 = 5/10 = 1/2
0,(3) = 3/9 = 1/3
0,1(6) = (16-1)/90 = 15/90 = 1/6
x/1/(1/2) = y/1/(1/3) = z/1/(1/6) = k
x/2 = y/3 = z/6 = k
x = 2k
y = 3k
z = 6k
3×2k + 4×3k - 2×6k = 30
6k + 12k - 12k = 30
6k = 30
k = 5
x = 2·k = 2×5 = 10
y = 3·k = 3×5 = 15
z = 6·k = 6×5 = 30