trả lời
999-999+999-1+1-2+9=1006
chúc bạn học tốt >.<
999 - 999 + 999 - 1 + 1 - 2 + 9
= 997 + 9
= 1006
Hok tốt
# Smile #
999 - 999 + 999 - 1 + 1 - 2 + 9 = ????
0 + 999 - 1 + 1 - 2 + 9 = ????
998 + 1 - 2 + 9 = ????
999 - 2 + 9 = ????
997 + 9 = 1006
999 - 999 + 999 - 1 + 1 - 2 + 9 = 1.006
999-999+999-1+1-2+9
= 0 + 998 +1-2+9
= 998 +1-2+9
= 999 -2+9
= 997+9
= 1006