пусть 5,2(6) = x
тогда
52.(6) = 10x
526.(6) = 100x
100x - 10x = 526.(6) - 52.(6)
90x = 474
x = 474/90 = 79/15
пусть 5,2(6) = x
тогда
52.(6) = 10x
526.(6) = 100x
100x - 10x = 526.(6) - 52.(6)
90x = 474
x = 474/90 = 79/15