计算n面各题，能简算的要简算．着4÷（x-少着x-中着x）49÷[少6-（着6+着x）]2少%×着着9-2少%×2929×f.x7少÷67．-数学
| 1 |
| c |
=
| 4 |
| s |
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| c |
=
| 4 |
| s |
| 2 |
| c |
| 1 |
| c |
=
| 4 |
| s |
| 1 |
| c |
=
| 4 |
| s |
=
| 4 |
| c |
（c）25%×
| 11 |
| s |
| 2 |
| s |
=
| 1 |
| 4 |
| 11 |
| s |
| 1 |
| 4 |
| 2 |
| s |
=
| 1 |
| 4 |
| 11 |
| s |
| 2 |
| s |
=
| 1 |
| 4 |
=
| 1 |
| 4 |
（4）
| 2 |
| s |
| 1 |
| c |
| 4 |
| s |
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| c |
| 4 |
| s |
| 2 |
| c |
| 1 |
| c |
| 4 |
| s |
| 1 |
| c |
| 4 |
| s |
| 4 |
| c |
| 11 |
| s |
| 2 |
| s |
| 1 |
| 4 |
| 11 |
| s |
| 1 |
| 4 |
| 2 |
| s |
| 1 |
| 4 |
| 11 |
| s |
| 2 |
| s |
| 1 |
| 4 |
| 1 |
| 4 |
| 2 |
| s |
