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巧算(702-213-414)/3
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巧算 (702-213-414)/3
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(702-213-414)/3
=(700-200-400-13-14+2)/3
=(100-27+2)/3
=(100-25)/3
=75/3
=25
=(700-200-400-13-14+2)/3
=(100-27+2)/3
=(100-25)/3
=75/3
=25
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