Решите уровнение: 8 7\18 - ( 1 11\15 y ) = 3 4\15 + 2 13\45

8 7/18 - (1 11/15 *у) = 3 4/15 +2 13/45
 151/18  - 26/15*у= 49/15 +103/45 
151/18 - 26/15 *у= (147+103)/45
151/18 - 26/15*у = 250/45
151/18 - 26/15 *у= 50/9
-26/15*у= 50/9 -151/18
-26/15*у= (100-151)/18
-26/15*у= -51/18
у= (-51/18) : (-26/15)=  51*15/ 18*26 =51*5/6*26=17*5/2*26
у=85/52 =  1 33/52
Проверим:
8 7/18 - (1 11/15* 1 33/52)= 3 4/15 + 2 13/45
8 7/18 -  (26*85/15*52)= 49/15 +103/45
151/18 - (1*17/3*2)=(147+103)/45
151/18 - 51/18 = 250/45
100/18 =250/45
50/9= 50/9