题目内容

能简算的要简算:
2
3
×
2
7
+
2
3
÷
7
5
        
8
7
-(2-
7
8
-
1
8
)       
12×(
5
6
-
3
4
1
7
+
7
8
÷
7
5
+
3
8
1
3
+
1
4
)×(
5
3
÷
5
6
[
7
8
-(
3
8
+
1
4
)]÷4.
(1)
2
3
×
2
7
+
2
3
÷
7
5

=
2
3
×
2
7
+
2
3
×
5
7

=(
2
7
+
5
7
)×
2
3

=1×
2
3

=
2
3


(2)
8
7
-(2-
7
8
-
1
8
),
=
8
7
-[2-(
7
8
+
1
8
)],
=
8
7
-[2-1],
=
8
7
-1,
=
1
7


(3)12×(
5
6
-
3
4
),
=12×
5
6
-12×
3
4

=10-9,
=1;

(4)
1
7
+
7
8
÷
7
5
+
3
8

=
1
7
+
7
8
×
5
7
+
3
8

=
1
7
+
5
8
+
3
8

=
1
7
+(
5
8
+
3
8
),
=
1
7
+1,
=1
1
7


(5)(
1
3
+
1
4
)×(
5
3
÷
5
6
),
=
7
12
×(
5
3
×
6
5
),
=
7
12
×2,
=
7
6


(6)[
7
8
-(
3
8
+
1
4
)]÷4,
=[
7
8
-
3
8
-
1
4
)]÷4,
=[
2
4
-
1
4
]÷4,
=
1
4
×
1
4

=
1
16
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