问题 解答题
递等式计算.
2
3
+
8
5
×
5
6
2
5
-
1
4
)×20
27×
2
9
-22×
2
11
答案

(1)

2
3
+
8
5
×
5
6

=

2
3
+
4
3

=2;

(2)(

2
5
-
1
4
)×20,

=

2
5
×20-
1
4
×20,

=8-5,

=3;

(3)27×

2
9
-22×
2
11

=6-4,

=2.

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