how do you solve a magic square using -5 to +10 with a sum of 10 for each column/row

Question

How do you solve a magic square using using integers -5 through +10?  Each column/row/diagonal has a sum of 10.

Answer 1

-5	9	8	-2
6	0	1	3
2	4	5	-1
7	-3	-4	10

Has to be 4X4 because there are 16 numbers. Sum=10.

METHOD

Write numbers left to right, top to bottom, from -5 to 10 in 4X4 matrix, then erase numbers that do not lie on diagonals.

Starting with 9 and working backwards to -4, fill in all the remaining boxes with the remaining numbers left to right, top to bottom.