835-1.5÷[123×(□+113)]=825,那么□中应填多少?-数学

题目简介

835-1.5÷[123×(□+113)]=825,那么□中应填多少?-数学

题目详情

8
3
5
-1.5÷[1
2
3
×(□+1
1
3
)]=8
2
5
,那么□中应填多少?
题型:解答题难度:中档来源:不详

答案


8class="stub"3
5
-1.5÷[1class="stub"2
3
×(□+1class="stub"1
3
)]=8class="stub"2
5

8class="stub"3
5
-1.5÷[1class="stub"2
3
×(□+1class="stub"1
3
)]+1.5÷[1class="stub"2
3
×(□+1class="stub"1
3
)]=8class="stub"2
5
+1.5÷[1class="stub"2
3
×(□+1class="stub"1
3
)]
1.5÷[1class="stub"2
3
×(□+1class="stub"1
3
)]+8class="stub"2
5
=8class="stub"3
5

1.5÷[1class="stub"2
3
×(□+1class="stub"1
3
)]+8class="stub"2
5
-8class="stub"2
5
=8class="stub"3
5
-8class="stub"2
5

1.5÷[1class="stub"2
3
×(□+1class="stub"1
3
)]=class="stub"1
5

1.5÷[1class="stub"2
3
×(□+1class="stub"1
3
)]×[1class="stub"2
3
×(□+1class="stub"1
3
)]=class="stub"1
5
×[1class="stub"2
3
×(□+1class="stub"1
3
)]
class="stub"1
5
×[1class="stub"2
3
×(□+1class="stub"1
3
)]÷class="stub"1
5
=1.5÷class="stub"1
5

1class="stub"2
3
×(□+1class="stub"1
3
)=7.5
1class="stub"2
3
×(□+1class="stub"1
3
)÷1class="stub"2
3
=7.5÷1class="stub"2
3

□+1class="stub"1
3
=4.5
□+1class="stub"1
3
-1class="stub"1
3
=4.5-1class="stub"1
3

□=3class="stub"1
6

所以,□中应填3class="stub"1
6

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