| 1 |
| 51 |
| 1 |
| 2000 |
| 1 |
| 1949 |
| 1 |
| 2000 |
| 1 |
| 1949 |
| 1 |
| 51 |
=
| 949 |
| 51 |
| 1949 |
| 2000 |
| 51 |
| 1949 |
| 51 |
| 2000 |
| 2000 |
| 1949 |
| 2000 |
| 51 |
=（
| 1949 |
| 51 |
| 2000 |
| 51 |
| 51 |
| 1949 |
| 2000 |
| 1949 |
| 1919 |
| 2000 |
| 51 |
| 1949 |
=-1-1-1+3，
=0．
1949×(1/51−1/2000)+51×(1/1949−1/2000)−2000×(1/1949+1/51)+3．
1949×(
−
)+51×(
−
)−2000×(
+
)+3．
| 1 |
| 51 |
| 1 |
| 2000 |
| 1 |
| 1949 |
| 1 |
| 2000 |
| 1 |
| 1949 |
| 1 |
| 51 |
数学人气：952 ℃时间：2019-12-18 05:26:37
优质解答
1949×（
-
）+51×（
-
）-2000×（
+
）+3，
=
-
+
-
-
-
，
=（
-
）+（
-
）-（
+
）+3，
=-1-1-1+3，
=0．
=
=（
=-1-1-1+3，
=0．
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