44 + 48 + 49 + 76 + 88 + 99 = 404
46 + 28 + 48 + 78999 = 79 121
44 + 48 + 49 + 76 + 88 + 99 46 + 28 + 48 + 78999
= 92 + 49 + 76 + 88 + 99 = 74 + 48 + 78999
= 141 + 76 + 88 + 99 = 122 + 78999
= 217 + 88 + 99 = 79121
= 305 + 99
= 404
44+48+49+76+88+99=404
48+28+48+78999=79121
44 + 48 + 49 + 76 + 88 + 99 = 404
46 + 28 + 48 + 78999 = 79121
tk nha. Học giỏi.
44+48+49+76+88+99=404
46+28+48+78999=79121
học tốt