Question

Khi nào thì 1+ 2= 1

                3+ 4=1

                4+9 =1

                5+ 7=1

                6+ 18 =1

Answer 1

khi :2thang + 1thang =1quy

  3ngay + 4ngay =1tuan

4 h + 9h=13h (h chieu)

5 thang + 7thang =1 nam

6 h+18h =1ngay

Answer 2

cau nay mik ko noi dap an ne

8 - 6 = 2

8 + 6 = 2