29 + 39 + 49 + 59 + 69 + 79
= 68 + 49 + 59 + 69 + 79
= 127 + 59 + 69 + 79
= 186 + 69 + 79
= 254 + 79
= 333
29 + 39 + 49 + 59 + 69 + 79 = 324
k mk , mk k lai
29 + 39 + 49 + 59 + 69 + 79 = 324
k mk , mk k lai
29 + 39 + 49 + 59 + 69 + 79= 324
MK K BN RỒI NÊN K MK NHÉ