(450+40)-280. (460+40)-280. (470+40)-280

Question

(450+40)-280. (460+40)-280. (470+40)-280

Answer 1

1) (450+40)-280= 450+40=490-280=210
2)(460+40)-280=460+40=500-280=220
3) (470+40)-280=470+40=510-280=230

Answer 2

(450+40)-280=210
(460+40)-280=220.
(470+40)-280=230