103+415+21= 539
287-21+13= 279
432-23+21= 430
= 539
= 279
= 430
103 + 415 + 21= 539
287 - 21 + 13= 279
432 - 23 + 21= 430
103+415+21=539
287-21+13=279
432-23+21=430
103+415+21 = 539
287-21+13 = 279
432-23+21 = 430
103+415+21 bằng 539 287-21+13 bằng 279 432-23+21 bằng 430 Hok Tốt
103+415+21=579
287-21+13=279
432-23+21=430
-539
-279
-430
nha bạn