Решите (8 2/5: х+3 5/9): 4 1/6=1 1/3

8 2/5х + 3 5/9) : 4 1/6 = 1 1/3,
(42/5х + 32/9) : 25/6 = 4/3,
42/5х + 32/9 = 4/3 * 25/6,
42/5х + 32/9 = 50/9,
42/5х = 50/9 - 32/9,
42/5х = 18/9,
х = 18/9 : 42/5,
х = 18/9 * 5/42, 
х = 5/21