脱式计算51.6÷[(3&

脱式计算51.6÷[(3 25-1.25)×45](56-34)÷(14+16)
2025-02-28 04:08:23
推荐回答(1个)
回答1:

(1)51.6÷[(3
2
5
-1.25)×
4
5
],
=51.6÷[(3.4-1.25)×
4
5
],
=51.6÷[2.15×
4
5
],
=51.6÷1.72,
=30;

(2)(
5
6
-
3
4
)÷(
1
4
+
1
6
),
=
1
12
÷
5
12

=
1
12
×
12
5

=
1
5