题目内容
1949×(
-
)+43×(
-
)-1992×(
+
)+103.
| 1 |
| 43 |
| 1 |
| 1992 |
| 1 |
| 1949 |
| 1 |
| 1992 |
| 1 |
| 1949 |
| 1 |
| 43 |
1949×(
-
)+43×(
-
)-1992×(
+
)+103,
=1949×
-1949×
+43×
-43×
-1992×
-1992×
+103,
=
-
+
-
-
-
+103,
=103+(
-
)+(
-
)-(
+
),
=103-1+(-1)-1,
=100.
| 1 |
| 43 |
| 1 |
| 1992 |
| 1 |
| 1949 |
| 1 |
| 1992 |
| 1 |
| 1949 |
| 1 |
| 43 |
=1949×
| 1 |
| 43 |
| 1 |
| 1992 |
| 1 |
| 1949 |
| 1 |
| 1992 |
| 1 |
| 1949 |
| 1 |
| 43 |
=
| 1949 |
| 43 |
| 1949 |
| 1992 |
| 43 |
| 1949 |
| 43 |
| 1992 |
| 1992 |
| 1949 |
| 1992 |
| 43 |
=103+(
| 1949 |
| 43 |
| 1992 |
| 43 |
| 43 |
| 1949 |
| 1992 |
| 1949 |
| 1949 |
| 1992 |
| 43 |
| 1992 |
=103-1+(-1)-1,
=100.
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