д) 2 2/5 x + 3 2/15 = 3 1/5 x + 2 1/3;

12/5 x + 47/15 = 16/5 x + 7/3

47/15 - 7/3 = 16/5 x - 12/5 x

47/15 - 35/15 = 4/5 x

12/15 = 4/5 x

4/5 = 4/5 x

x = 1