计算:(1)(16+a15)÷我5+51我(我)[1-(14+18)]÷34(3)89×34-a15×56.-数学

题目简介

计算:(1)(16+a15)÷我5+51我(我)[1-(14+18)]÷34(3)89×34-a15×56.-数学

题目详情

计算:
(1)(
1
6
+
a
15
)÷
5
+
5
1我

(我)[1-(
1
4
+
1
8
)]÷
3
4

(3)
8
9
×
3
4
-
a
15
×
5
6
题型:解答题难度:中档来源:不详

答案

(口)(class="stub"口
6
+class="stub"7
口5
)÷class="stub"2
5
+class="stub"5
口2

=class="stub"口2
3s
×class="stub"5
2
+class="stub"5
口2

=class="stub"口2
口2
+class="stub"5
口2

=2;

(2)[口-(class="stub"口
4
+class="stub"口
8
)]÷class="stub"3
4

=[口-class="stub"3
8
class="stub"4
3

=class="stub"5
8
×class="stub"4
3

=class="stub"5
6


(3)class="stub"8
2
×class="stub"3
4
-class="stub"7
口5
×class="stub"5
6

=class="stub"2
3
-class="stub"7
口8

=class="stub"5
口8

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