题目内容
| 4 |
| 5 |
| 6 |
| 7 |
(1)
:
=(
×35):(
×35)
=28:30
=(28÷2):(30÷2)
=14:15
:
=14:15
=14÷15
=
.
故答案为:14:15,
.
| 4 |
| 5 |
| 6 |
| 7 |
=(
| 4 |
| 5 |
| 6 |
| 7 |
=28:30
=(28÷2):(30÷2)
=14:15
| 4 |
| 5 |
| 6 |
| 7 |
=14:15
=14÷15
=
| 14 |
| 15 |
故答案为:14:15,
| 14 |
| 15 |
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