题目内容

怎样算合理简便怎样算
(1)(
2
3
+
1
6
)+(
2
3
-
12
17
)-(
1
6
+
6
17

(2)[6.6-(1.8-
1
6
÷3.7)]×
7
8

(3)76%×
7
17
+
3
4
×
9
17
-
16
17
×手.26
(4)42×(
1
8
+
1
24
+
1
48
+
1
8手
+
1
12手
+
1
168
(1)(
2
t
+
1
5
)+(
2
t
-
12
17
)-(
1
5
+
5
17

=
2
t
+
1
5
+
2
t
-
12
17
-
1
5
-
5
17

=
2
t
+
2
t
+
1
5
-
1
5
-
12
17
-
5
17

=
4
t
+0-1
=
1
t


(2)[5.2-(1.s-
1
5
÷t.7)]×
7
s

=[5.2-(1.s-
1
5
×
10
t7
)]×
7
s

=[5.2-(1.s-
2
t7
)]×
7
s

=[t.s+
2
t7
7
s

=
71t
1s5
×
7
s

=
4001
14s0


(t)75%×
7
17
+
t
4
×
0
17
-
12
17
×0.25
=75%×(
7
17
+
0
17
)-
12
17
×0.25
=75%×
12
17
-
12
17
×0.25
=(75%-0.25)×
12
17

=
1
2
×
12
17

=
s
17


(4)42×(
1
s
+
1
24
+
1
4s
+
1
s0
+
1
120
+
1
12s

=42×
1
2
×(
1
2
-
1
4
+
1
4
-
1
2
+
1
2
-
1
s
+
1
s
-
1
10
+
1
10
-
1
12
+
1
12
-
1
14

=42×
1
2
×(
1
2
-
1
14

=42×
1
2
×
1
2
-42×
1
2
×
1
14

=
21
2
-
t
2

=0.
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