题目内容

下面各题能简算的要简算.
 48×(
7
12
+
1
3
2
3

23-
8
9
×
3
4
÷
1
27

5÷[(
2
3
+
1
5
1
13
]
(1)48×(
7
12
+
1
3
)÷
2
3

=48×(
7
12
+
1
3
)×
3
2

=48×
7
12
×
3
2
+48×
1
3
×
3
2

=42+24,
=66;

(2)23-
8
9
×
3
4
÷
1
27

=23-
8
9
×
3
4
×27,
=23-18,
=5;

(3)5÷[(
2
3
+
1
5
)×
1
13
],
=5÷[
13
15
×
1
13
],
=5÷
1
15

=5×15,
=75.
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