2/3делить4/9х-4/9+1/20=4/5 решить уравнение

2/3:4/9х-4/9+1/20=4/5
(4/9х-4/9+1/20)4/5=2/3
((4/9)х-4/9+1/20)2/5=1/3
(8/45)х-8/45+1/50=4/5
(8/45)х=8/45-1/50+4/5
(8/45)х=(400-45+450)/2250
(8/45)х=905/2250
х=(905/2250)*45/8
x=2,2625