题目内容
(
+0.8)÷0.63-(
÷0.45-1
).
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| 4 |
| 3 |
| 4 |
| 2 |
| 5 |
(
+0.8)÷0.63-(
÷0.45-1
),
=(
+
)÷
-(
÷
-1
),
=
×
-(
×
-1
),
=
-(
-1
),
=
-
+1
,
=1
.
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| 4 |
| 3 |
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=(
| 1 |
| 4 |
| 4 |
| 5 |
| 63 |
| 100 |
| 3 |
| 4 |
| 9 |
| 20 |
| 2 |
| 5 |
=
| 21 |
| 20 |
| 100 |
| 63 |
| 3 |
| 4 |
| 20 |
| 9 |
| 2 |
| 5 |
=
| 5 |
| 3 |
| 5 |
| 3 |
| 2 |
| 5 |
=
| 5 |
| 3 |
| 5 |
| 3 |
| 2 |
| 5 |
=1
| 2 |
| 5 |
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