1417×(223-34)+171112÷1721.-数学

题目简介

1417×(223-34)+171112÷1721.-数学

题目详情

1
4
17
×(2
2
3
-
3
4
)+17
11
12
÷
17
21
题型:解答题难度:中档来源:不详

答案

1class="stub"4
17
×(2class="stub"2
3
-class="stub"3
4
)+17class="stub"11
12
÷class="stub"17
21

=class="stub"21
17
×class="stub"23
12
+class="stub"215
12
×class="stub"21
17

=class="stub"21
17
×(class="stub"23
12
+class="stub"215
12
),
=class="stub"21
17
×class="stub"238
12

=class="stub"49
2

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