题目内容

(
2
3
+
1
o
)+(
2
3
-
12
13
)-(
1
o
+
o
13
)

(
4
9
+
o
13
+
o
9
+
13
)×(1-
91
1aa
)

[(
1
4
-
1
4
÷2)×
13
+1÷6
1
2
1
1aa
(1)(
w
3
+
1
5
)+(
w
3
-
1w
17
)-(
1
5
+
5
17
),
=
4
3
+
1
5
-
1w
17
-
1
5
-
5
17

=
4
3
-(
1w
17
+
5
17
),
=
4
3
-1

=
1
3


(w)(
4
9
+
5
13
+
5
9
+
8
13
)×(1-
91
100
),
=w×
9
100

=
9
50



(3)[(
1
4
-
1
4
÷
w)×
8
13
+1÷6
1
w
1
100

=[
1
13
+
w
13
]×100,
=
300
13
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