1-(112+115)×2=67-67×(23+19)=1516÷(512÷58+38)=(56-14×23)÷16=49÷[(23-29)×24]=(38-14)÷(89×34)=-数学

题目简介

1-(112+115)×2=67-67×(23+19)=1516÷(512÷58+38)=(56-14×23)÷16=49÷[(23-29)×24]=(38-14)÷(89×34)=-数学

题目详情

1-(
1
12
+
1
15
)×2
=
6
7
-
6
7
×(
2
3
+
1
9
)
=
15
16
÷(
5
12
÷
5
8
+
3
8
)
=
(
5
6
-
1
4
×
2
3
1
6
=
4
9
÷[(
2
3
-
2
9
2
4
]
=
(
3
8
-
1
4
)÷(
8
9
×
3
4
)
=
题型:解答题难度:中档来源:不详

答案

(1)1-(class="stub"1
12
+class="stub"1
15
)×2,
=1-(class="stub"5
60
+class="stub"4
60
)×2,
=1-class="stub"9
60
×2,
=1-class="stub"3
10

=class="stub"7
10


(2)class="stub"6
7
-class="stub"6
7
×(class="stub"2
3
+class="stub"1
9
),
=class="stub"6
7
-class="stub"6
7
×(class="stub"6
9
+class="stub"1
9
),
=class="stub"6
7
-class="stub"6
7
×class="stub"7
9

=class="stub"6
7
×(1-class="stub"7
9
),
=class="stub"6
7
×class="stub"2
9

=class="stub"4
21


(3)class="stub"15
16
÷(class="stub"5
12
÷class="stub"5
8
+class="stub"3
8
),
=class="stub"15
16
÷(class="stub"5
12
×class="stub"8
5
+class="stub"3
8
),
=class="stub"15
16
÷(class="stub"8
12
+class="stub"3
8
),
=class="stub"15
16
÷(class="stub"16
24
+class="stub"9
24
),
=class="stub"15
16
÷class="stub"25
24

=class="stub"15
16
×class="stub"24
25

=class="stub"9
10


(4)(class="stub"5
6
-class="stub"1
4
×class="stub"2
3
)÷class="stub"1
6

=(class="stub"5
6
-class="stub"1
6
)÷class="stub"1
6

=class="stub"4
6
×6,
=4;

(5)class="stub"4
9
÷[(class="stub"2
3
-class="stub"2
9
)×class="stub"2
4
],
=class="stub"4
9
÷[(class="stub"6
9
-class="stub"2
9
)]×class="stub"1
2
],
=class="stub"4
9
÷[class="stub"4
9
×class="stub"1
2
],
=class="stub"4
9
÷class="stub"2
9

=class="stub"4
9
×class="stub"9
2

=2;

(6)(class="stub"3
8
-class="stub"1
4
)÷(class="stub"8
9
×class="stub"3
4
),
=(class="stub"3
8
-class="stub"2
8
)÷class="stub"2
3

=class="stub"1
8
×class="stub"3
2

=class="stub"3
16

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