题目内容
(1.4-
)÷(
+
)×2.5.
| 2 |
| 3 |
| 7 |
| 12 |
| 5 |
| 6 |
(1.4-
)÷(
+
)×2.5,
=(1
-
)÷
×
,
=(
-
)×
×
,
=
×
×
,
=1
.
| 2 |
| 3 |
| 7 |
| 12 |
| 5 |
| 6 |
=(1
| 2 |
| 5 |
| 2 |
| 3 |
| 17 |
| 12 |
| 5 |
| 2 |
=(
| 21 |
| 15 |
| 10 |
| 15 |
| 12 |
| 17 |
| 5 |
| 2 |
=
| 11 |
| 15 |
| 12 |
| 17 |
| 5 |
| 2 |
=1
| 5 |
| 17 |
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