| 1 |
| x |
| 2 |
| y+z |
| 3 |
| x+z |
| x |
| z-y |
| 1 |
| 2 |
| 1 |
| 2 |
| a |
| b |
| c |
| d |
| e |
| f |
| 2 |
| 3 |
| a+3c |
| b+3d |
| 2 |
| 3 |
| 2 |
| 3 |
| c-e |
| d-f |
| 2 |
| 3 |
| 2 |
| 3 |
| b |
| a |
| 4d-7 |
| c |
| b+1 |
| a |
| 7(d-1) |
| c |
| c |
| a |
| d |
| b |
| a |
| b+1 |
| a |
| 3 |
| a |
| b |
| 2 |
| 3 |
| a |
| a+b |
| 2 |
| 5 |
| 2 |
| 5 |
| a |
| b |
| 3 |
| 2 |
| a+b |
| b |
| 5 |
| 2 |
| 5 |
| 2 |
| a |
| a-b |
| x+y |
| y |
| 5 |
| 2 |
| 5 |
| 2 |
| y |
| x-y |
| 5 |
| 3 |
| x |
| y |
| 8 |
| 5 |
| 8 |
| 5 |
| a |
| 2 |
| b |
| 3 |
| c |
| 4 |
| x |
| 3 |
| y |
| 5 |
| z |
| 6 |
| a |
| b |
| 3 |
| 2 |
| a-b |
| b |
| 1 |
| 2 |
| 1 |
| 2 |
| 3a+b |
| a-b |