11•(60+а); 21•(38-b); (x-9)•24; (y+4)•38.

Question

11•(60+а);
21•(38-b);
(x-9)•24;
(y+4)•38.

Answer 1

11*60+а= 660+11а;21*38-21б=798-21б;24х-24*9=24х-216;38у+38*4=38у+152