antonio is thinking of four number from 1 through 9 with a sum of 18. find the number

Answer 1

3,4,5,6
2,3,6,7
2,4,5,7
1,4,5,8
1,2,7,8
1,3,6,8
1,4,5,8

(4,4,5,5)?

Answer 2

The real question is, Is this calculus?