〔等号〕an equals sign ((記号=))

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イコールである equal／be equal ((to))

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4足す5イコール9 Four and [plus] five equal ( s ) [ make ( s )／ are ／ is ] nine.

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8引く3イコール5 「Three from eight [Eight minus three] is [ leaves ] five.

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31割る4イコール7余り3 Thirty-one divided by four is [ gives ] seven 「with three left over [with a remainder of three].