11*(60+а)= 11*60+11*а=660+11а
...=21:38-21:b= 21/38-21/b
...=24**х-24*9=24х-8/3=24х-2 целых2 третьих
11•(60+a)=11•60+11•a=660+11a
21•(38-б)=21•38-21•б=798-21б
(х-9)•24=х•24-9•24=24х-216
11*(60+а)= 11*60+11*а=660+11а
...=21:38-21:b= 21/38-21/b
...=24**х-24*9=24х-8/3=24х-2 целых2 третьих
11•(60+a)=11•60+11•a=660+11a
21•(38-б)=21•38-21•б=798-21б
(х-9)•24=х•24-9•24=24х-216