计算:115+415+715=1-27-57=916-216+316=1-29-49=-数学

题目简介

计算:115+415+715=1-27-57=916-216+316=1-29-49=-数学

题目详情

计算:
1
15
+
4
15
+
7
15
=
1-
2
7
-
5
7
=
9
16
-
2
16
+
3
16
=
1-
2
9
-
4
9
=
题型:解答题难度:中档来源:不详

答案

class="stub"1
15
+class="stub"4
15
+class="stub"7
15
=class="stub"4
5
1-class="stub"2
7
-class="stub"5
7
=0
class="stub"9
16
-class="stub"2
16
+class="stub"3
16
=class="stub"5
8
1-class="stub"2
9
-class="stub"4
9
=class="stub"1
3

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