2行目から3行目の式になったところが分かりません教えてください - Clearnote

Mathematics

Undergraduate

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about 10 yearsago

2行目から3行目の式になったところが分かりません教えてください

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✨ Best Answer ✨

about 10 yearsago

通分してカッコの中を計算したらなる

ゆず about 10 yearsago

有難うございます！！

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