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      2. ęn>С(sh)W\㶨ɿY(ji)

        С(sh)W\㶨ɿY(ji)

        rg2022-06-03 01:13:55

        С(sh)W\㶨ɿY(ji)

        С(sh)W\㶨ɿY(ji)

        С(sh)W\㶨ɿY(ji)

        1. ӷQɣ

        ɂ(sh)QӔ(sh)λãĺͲ׃a+b=b+a

        2. ӷY(ji)ɣ

        (sh)Ȱǰɂ(sh)ټϵ(sh);ȰѺɂ(sh)ٺ͵һ(sh)ĺͲ׃(a+b)+c=a+(b+c) 

        3. ˷Qɣ

        ɂ(sh)Q(sh)λķe׃ab=ba

        4. ˷Y(ji)ɣ

        (sh)Ȱǰɂ(sh)ٳԵ(sh);ȰѺɂ(sh)ˣٺ͵һ(sh)ķe׃(ab)c=a(bc)

        5. ˷ɣ

        ɂ(sh)ĺcһ(sh)԰уɂӔ(sh)քec@(sh)ٰуɂeӣ(a+b)c=ac+bc 

        6. p|(zh)

        һ(sh)Bm(x)pȥׂ(sh)ԏ@(sh)pȥМp(sh)ĺ׃a-b-c=a-(b+c) 

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