3×3方框里填数字将-15,-12,-9,-6,-3,0,3,6,9填入3×3的小方格内,是大方格内的横竖,斜对角的三个数之和都相等,这要怎麼填啊?█▏█▏█▏█▏█▏█▏█▏█▏█▏帮帮忙!

问题描述:

3×3方框里填数字
将-15,-12,-9,-6,-3,0,3,6,9填入3×3的小方格内,是大方格内的横竖,斜对角的三个数之和都相等,这要怎麼填啊?
█▏█▏█▏
█▏█▏█▏
█▏█▏█▏帮帮忙!

-12 3 0
9 -3 -15
-6 -9 6