xA |
xB |
xA﹣xB |
|AB| |
3 |
2 |
1 |
1 |
1 |
5 |
|
|
2 |
﹣3 |
|
|
﹣4 |
1 |
|
|
﹣5 |
﹣2 |
|
|
﹣3 |
﹣6 |
|
|
-(-3), ﹣1.5, -(+2),|﹣4|