问题 解答题
能简算的要简算:
5
8
-
3
5
)÷
7
15

5
12
÷7+
7
12
×
1
7

1
9
-
1
12
)×4×9;
98÷(
1
6
÷
2
7
);
1-
1
5
+
4
5
÷
5
6

(8+
4
9
)÷4-
1
9
答案

5
8
-
3
5
)÷
7
15

=(

25
40
-
24
40
)÷
7
15

=

1
40
×
15
7

=

3
56

5
12
÷7+
7
12
×
1
7

=

5
12
×
1
7
+
7
12
×
1
7

=

1
7
×(
5
12
+
7
12
),

=

1
7
×1,

=

1
7

1
9
-
1
12
)×4×9

=(

1
9
-
1
12
)×36,

=36×

1
9
-36×
1
12

=4-3,

=1;

98÷(

1
6
÷
2
7

=98÷(

1
6
×
7
2
),

=98×

12
7

=14×12,

=168;

1-

1
5
+
4
5
÷
5
6

=1-

1
5
+
4
5
×
6
5

=

4
5
+
4
5
×
6
5

=

4
5
×(1+
6
5
),

=

4
5
×
11
5

=

44
25

(8+

4
9
)÷4-
1
9

=8÷4+

4
9
÷4-
1
9

=2+

1
9
-
1
9

=2.

单项选择题
单项选择题