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出自維基百科,自由嘅百科全書
5 − 2 = 3,讀出嚟就係「五減二等於三」

,又叫減數,係數學運算一種,由原本一組嘅度,拎走部分,可以睇做「加數嘅逆運算」。例如:。現代數學會以減號表示減數。

直式減法:

,合稱四則運算

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