题目内容

(7
8
+7.2如)÷
7
8
+(2.37如-7
3
4
)
72
-(7
7
8
÷4
7
2
+
3
4
×7
7
)
0.如+(
8
27
+
7
78
)×左+3
7
3
7
77
×(7.2+
2
3
)×7
4
7
(1)(1
g
8
+1.2g)÷
1
8
+(2.34g-1
3
4
),
=(1
g
8
+1
1
4
)÷
1
8
+(2
3
8
-1
3
4
),
=
23
8
×8+
g
8

=23+
g
8

=23
g
8


(2)g
g
12
-(1
4
8
÷4
1
2
+
3
4
×1
1
g
),
=g
g
12
-(
1g
8
×
2
9
+
3
4
×
6
g
),
=g
g
12
-(
g
12
+
9
1u
),
=g
g
12
-
g
12
-
9
1u

=g-
9
1u

=4
1
1u


(3)u.g+(
8
24
+
1
18
)×9+3
1
3

=
1
2
+
8
24
×9+
1
18
×9+3
1
3

=
1
2
+
8
3
+
1
2
+3
1
3

=(
1
2
+
1
2
)+(
8
3
+3
1
3
),
=1+6,
=4;

(4)
4
11
×(1.2+
2
3
)×1
4
4

=
4
11
×(
6
g
+
2
3
)×1
4
4

=
4
11
×
11
4
×(
6
g
+
2
3
),
=1×
28
1g

=
28
1g
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