题目内容
(2
×
+0.84×2
)÷[4.375-(2
+1
)].
| 2 |
| 9 |
| 4 |
| 25 |
| 2 |
| 9 |
| 3 |
| 8 |
| 7 |
| 12 |
(2
×
+0.84×2
)÷[4.375-(2
+1
)]
=(
+0.84)×2
÷[4.375-(2
+1
)],
=1×2
÷[4.375-(2.375+1
)],
=2
÷[4-1
],
=2
÷2
,
=1
.
| 2 |
| 9 |
| 4 |
| 25 |
| 2 |
| 9 |
| 3 |
| 8 |
| 7 |
| 12 |
=(
| 4 |
| 25 |
| 2 |
| 9 |
| 3 |
| 8 |
| 7 |
| 12 |
=1×2
| 2 |
| 9 |
| 7 |
| 12 |
=2
| 2 |
| 9 |
| 7 |
| 12 |
=2
| 2 |
| 9 |
| 5 |
| 12 |
=1
| 1 |
| 87 |
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