(258-23×2514)÷[(3112+4.375)÷1989].-数学

题目简介

(258-23×2514)÷[(3112+4.375)÷1989].-数学

题目详情

(2
5
8
-
2
3
×2
5
14
)÷[(3
1
12
+4.375)÷19
8
9
]
题型:解答题难度:中档来源:不详

答案

(2class="stub"5
8
-class="stub"2
3
×2class="stub"5
14
)÷[(3class="stub"1
12
+4.375)÷19class="stub"8
9
],
=(class="stub"21
8
-class="stub"2
3
×class="stub"33
14
)÷[(class="stub"37
12
+class="stub"35
8
)÷class="stub"179
9
],
=(class="stub"21
8
-class="stub"11
7
)÷[class="stub"179
24
×class="stub"9
179
],
=class="stub"59
56
÷class="stub"3
8

=class="stub"59
56
×class="stub"8
3

=2class="stub"17
21

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