(1)
| x-2y-3(-2x-3y-1)-2 |
| 2-1x2y-3 |
(2)-2-2+
| 2 |
| 5 |
| 1 |
| 2 |
答案:
(1)原式=| x-2y-3•(-2)-2x6y2 |
| 2-1x2y-3 |
=
| x4y-1•(-2)-2 |
| 2-1x2y-3 |
=
| 1 |
| 2 |
| 1 |
| 4 |
| 2 |
| 5 |
| 1 |
| 2 |
| 1 |
| 3 |
=
| 41 |
| 60 |

| x-2y-3(-2x-3y-1)-2 |
| 2-1x2y-3 |
| 2 |
| 5 |
| 1 |
| 2 |
答案:
(1)原式=| x-2y-3•(-2)-2x6y2 |
| 2-1x2y-3 |
| x4y-1•(-2)-2 |
| 2-1x2y-3 |
| 1 |
| 2 |
| 1 |
| 4 |
| 2 |
| 5 |
| 1 |
| 2 |
| 1 |
| 3 |
| 41 |
| 60 |