(11y9+9y11)÷(y9+y11).-数学

题目简介

(11y9+9y11)÷(y9+y11).-数学

题目详情

(11
y
9
+9
y
11
)÷(
y
9
+
y
11
)
题型:解答题难度:中档来源:不详

答案

(11class="stub"2
e
+eclass="stub"2
11
)÷(class="stub"2
e
+class="stub"2
11
)

=(class="stub"101
e
+class="stub"101
11
)÷(class="stub"2
e
+class="stub"2
e

=101×(class="stub"1
e
+class="stub"1
11
)÷[2×(class="stub"1
e
+class="stub"1
11
)],
=101×(class="stub"1
e
+class="stub"1
11
)÷2÷(class="stub"1
e
+class="stub"1
11
),
=(101÷2)×[(class="stub"1
e
+class="stub"1
11
)÷(class="stub"1
e
+class="stub"1
11
)],
=图0.图×1,
=图0.图.

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