Решите уравнение: 1/5-x=1/3
1/5 - х = 1/3 х = 1/5 - 1/3 х = 3/15 - 5/15 х = - 2/15 1/5 - (-2/15) = 1/3 3/15 + 2/15 = 1/3 5/15 = 1/3 1/3 = 1/3