计算. 3 4 ÷ 7 8 ÷ 15 14 ( 4 9 + 2 15 )

计算. 3 4 ÷ 7 8 ÷ 15 14 ( 4 9 + 2 15 )÷ 2 15 3 20 ÷0.2× 2 3 .
2025-03-17 20:10:28
推荐回答(1个)
回答1:


(1)
3
4
÷
7
8
÷
15
14

=
3
4
×
8
7
×
14
15

=
4
5


(2)(
4
9
+
2
15
)÷
2
15

=(
4
9
+
2
15
)×
15
2

=
4
9
×
15
2
+
2
15
×
15
2

=
10
3
+1,
= 4
1
3


(3)
3
20
÷0.2×
2
3

=
3
20
÷
1
5
×
2
3

=
3
20
×5×
2
3

=
3
20
×
2
3
×5,
=
1
2