问题 解答题
脱式计算.
1
6
+
1
3
+
1
4

1-
1
2
-
1
3

1-(
3
8
+
1
6

5
6
-
2
7
+
1
6
答案

(1)

1
6
+
1
3
+
1
4

=

2
12
+
4
12
+
3
12

=

9
12

=

3
4

(2)1-

1
2
-
1
3

=1-

3
6
-
2
6

=

1
6

(3)1-(

3
8
+
1
6
),

=1-(

9
24
+
4
24
),

=1-

13
24

=

11
24

(4)

5
6
-
2
7
+
1
6

=

5
6
+
1
6
-
2
7

=1-

2
7

=

5
7

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