Номер 609
11*(60+а)=(11*60)+(11*а)=660+(11*а)
21*(38-в)=(21*38)-(21*в)=798-(21*а)
(х-9)*24=(24*х)-(24*9)=(24*х)-216
(у+4)*38=(38*у)+(38*4)=(38*у)+152
номер 610
(250+25)*4=(250*4)+(25*4)=1000+100=1100
6*(150+16)=(6*150)+(6*16)=900+93=993
8*11+8*29=8*(11+29)=8*40=320
36*18+36*816=36*(18+816)=36*834=30094