题目内容

8
9
-(
8
9
-
9
a5
)
=
14
5
8
-a
5
11
-1
4
11
=
8
15
a3
+5
1
4
-6
15
a3
+
1
4
=
5
3
5
×
1
a
÷5
3
5
×
1
a
=
(5
5
9
-
4
5
+a
4
9
)×1a
1
a
=
(1)
8
9
-(
8
9
-
9
25
),
=
8
9
-
8
9
+
9
25

=
9
25


(2)14
5
8
-2
11
-1
4
11

=14
5
8
-(2
11
+1
4
11
),
=14
5
8
-4,
=10
5
8


(3)8
1小
23
+5
1
4
-6
1小
23
+
1
4

=(8
1小
23
-6
1小
23
)+(5
1
4
+
1
4
),
=2+5.5,
=小.5;

(4)5
3
×
1
2
÷5
3
×
1
2

=(5
3
÷5
3
)×(
1
2
×
1
2
),
=1×
1
4

=
1
4


(5)(5
5
9
-
4
5
+2
4
9
)×12
1
2

=(8-
4
5
)×12
1
2

=8×
25
2
-
4
5
×
25
2

=100-10,
=90,
故答案为:
9
25
,10
5
8
,小.5,
1
4
,90.
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