题目:将-18,-15,-12,-9,-6,-3,0,3,6填入3X3的小方格内,使横、竖、斜对角的3个数和都相等.
(初一的题)
请大家帮帮我~~~谢谢啦!!~~~~
3 -18 -3
-12 -6 0
-9 6 -15