Question

11 * (60+а)=
21*(38-b)=

Answer 1

11 * (60+а)=660+11а
21*(38-b)=798-21b

Answer 2

понял спасибо

Answer 3

21*(38-b)=21*38-21*b=798-21*b

Answer 4

(x-9)*24=(9*24)-x=216-x

Answer 5

(y+4)*38=(4*38)+y=152+y