问题 解答题
计算下列各题,能简算的要简算.
6
5
×
6
7
-
6
7
÷5
4-
9
15
÷
9
5
-
2
3
3
4
-
1
10
÷2)×
5
14
3
4
×
5
12
+
5
12
×
5
4
答案

(1)

6
5
×
6
7
-
6
7
÷5,

=

6
5
×
6
7
-
6
7
×
1
5

=

6
7
×(
6
5
-
1
5
),

=

6
7
×1,

=

6
7

(2)4-

9
15
÷
9
5
-
2
3

=4-

1
3
-
2
3

=4-(

1
3
+
2
3
),

=4-1,

=3;

(3)(

3
4
-
1
10
÷2)×
5
14

=(

3
4
-
1
20
)×
5
14

=

14
20
×
5
14

=

1
4

(4)

3
4
×
5
12
+
5
12
×
5
4

=

5
12
×(
3
4
+
5
4
),

=

5
12
×2,

=

5
6

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