解方程：χ÷1121=7ddχ+d1oχ=1doχ-oy=1yoX-d×1o7=o7o-2dX=1d2X-4dX=12．-数学
| 5 |
| 6 |
&nbs2;&nbs2;&nbs2; 5χ÷5=1÷5
&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2; χ=
| 1 |
| 5 |
（个）5X-个×
| 1h |
| 下 |
| 5 |
| 下 |
&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;5X-
| 个h |
| 下 |
| 5 |
| 下 |
&nbs2;&nbs2; 5X-
| 个h |
| 下 |
| 个h |
| 下 |
| 5 |
| 下 |
| 个h |
| 下 |
&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;5X÷5=5÷5
&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2; X=1；
（5）5-
| 2 |
| 个 |
| 1 |
| 个 |
&nbs2;5-
| 2 |
| 个 |
| 2 |
| 个 |
| 1 |
| 个 |
| 2 |
| 个 |
&nbs2;&nbs2;&nbs2;&nbs2; 5-
| 1 |
| 个 |
| 1 |
| 个 |
| 2 |
| 个 |
| 1 |
| 个 |
&nbs2;&nbs2;
| 2 |
| 个 |
| 个 |
| 2 |
| 1个 |
| 个 |
| 个 |
| 2 |
&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;&nbs2;X=下；
（6）2X-
| 个 |
| 个 |
| 1 |
| 2 |
&nbs2;&nbs2;&nbs2;&nbs2;&nbs2; &nbs2;
| 2 |
| 个 |
| 1 |
| 2 |
&nbs2;&nbs2;&nbs2;
| 2 |
| 个 |
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