x = 6 7/15
Пошаговое объяснение:
x - 3 1/5 = 1 3/5 + 2 2/3
x - 3 1/5 = 1 9/15 + 2 10/15
x - 3 1/5 = 2 19/15 = 3 4/15
x = 3 4/15 + 3 1/5
x = 3 4/15 + 3 3/15
