130+142+156+172.-数学

题目简介

130+142+156+172.-数学

题目详情

1
30
+
1
42
+
1
56
+
1
72
题型:解答题难度:中档来源:不详

答案

class="stub"1
30
+class="stub"1
42
+class="stub"1
56
+class="stub"1
72

=class="stub"1
5
-class="stub"1
6
+class="stub"1
6
-class="stub"1
7
+class="stub"1
7
-class="stub"1
8
+class="stub"1
8
-class="stub"1
9

=class="stub"1
5
-class="stub"1
9

=class="stub"9
45
-class="stub"5
45

=class="stub"4
45

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