脱式计算.1819-719-8191516-38-121524-524-124.-数学

题目简介

脱式计算.1819-719-8191516-38-121524-524-124.-数学

题目详情

脱式计算.
18
19
-
7
19
-
8
19

15
16
-
3
8
-
1
2

15
24
-
5
24
-
1
24
题型:解答题难度:中档来源:不详

答案

(1)class="stub"18
19
-class="stub"7
19
-class="stub"8
19

=class="stub"18
19
-(class="stub"7
19
+class="stub"8
19
),
=class="stub"18
19
-class="stub"15
19

=class="stub"3
19


(2)class="stub"15
16
-class="stub"3
8
-class="stub"1
2

=class="stub"15
16
-class="stub"6
16
-class="stub"8
16

=class="stub"15
16
-(class="stub"6
16
+class="stub"8
16

=class="stub"15
16
-class="stub"14
16

=class="stub"1
16


(3)class="stub"15
24
-class="stub"5
24
-class="stub"1
24

=class="stub"10
24
-class="stub"1
24

=class="stub"9
24

=class="stub"3
8

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