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            С؈ɯɯСW

            rg2025-10-10 04:29:56 С؈ ҪͶ

            С؈ɯɯСW

            P20ѾƷք

            С؈ɯɯСW

            ĸһbоƵľƿ,ѾƷք.ȰԼƿеľƿе,ʹľƳԭ2,ְяľԼƿе,ʹԼƿеľӵ3.@ӵ˃ɴ,߀Ǜ]зք,ƿо160,ƿо120.ƿԭжپ?

            õƷ.

            ڶǡoĵ,ʹƿеľӵ3,@rƿ120.֪ڏoǰ,оƣ1203=40()

            @Ώoĵľǣ120-40=80()

            o80˾ƺ,߀о160,fڽoĵǰ(Ҳoƺ),оƣ160+80=240()

            һĽo,ʹƿľƳԭ2,о240.@240˾һǏԼ,һĵo.

            ôԭоǣ240(1+1)=120()

            ԭоǣ40+120=160()160+120-120=160()

            P16Сx

            һֻСxСĵM˾.ÿ첻ͣ.ҵ,ÿ3,һҹҪ2.Сx߀LjԳ.@ھľ׵20.Сx峿_ʼľ.ҪԺ?

            һ죺׾,»20-3=17

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