计算:512-34+1.9.-数学

题目简介

计算:512-34+1.9.-数学

题目详情

计算:
5
12
-
3
4
+1.9
题型:解答题难度:中档来源:不详

答案

class="stub"5
12
-class="stub"3
4
+1.9,
=class="stub"5
12
-class="stub"9
12
+1.9,
=1.9-class="stub"1
3

=class="stub"19
10
-class="stub"1
3

=class="stub"47
30

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