题目内容
已知[(9
-7
)÷2
]÷[(
+□)×1
]=
,那么□=______.
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[(9
-7
)÷2
]÷[(
+□)×1
]=
,
[1
÷2
]÷[(
+□)×1
]=
,
÷[(
+□)×1
]=
,
(
+□)×1
=
÷
,
(
+□)×1
=
,
+□=
,
□=
.
故答案为:
.
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[1
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(
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(
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□=
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故答案为:
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