x+5/12)-9/20=11/15 скажите пж!!!!!!!!

(x+ 5/12) -9/20=11/15

x+5/12 = 11/15+ 9/20 ( 11/15 + 9/20 = 44/60 + 27/60 = 71/60 )

x+ 5/12 = 71/60

x = 71/60 - 5/12 = 71/60 - 25/60 = 46/60 = 23/30

x = 23/30