Number Sum
The following grid of size 5x5 is partially complete with whole numbers from 1 to 7.
The sum of each row and column is shown on the edges of the grid.
Fill in the missing numbers to complete the grid.
| 18 | 20 | 30 | 23 | 20 | |
| 19 | 6 | 4 | |||
| 24 | 1 | ||||
| 22 | 3 | ||||
| 20 | |||||
| 26 | 6 |