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x=2.454545......とおくと
100x=245.454545......となる。
100x=245.454545......
-) x= 2.454545......
￣￣￣￣￣￣￣￣￣￣￣
99x=243
11x=27
x=27/11
頑張ってください。
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ありがとうございます。分かりやすかったです!!