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Model Matematika Masalah 4




        Diketahui :



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         Ditanya :




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           Misalkan :
               x adalah
               y adalah
               z adalah






           Dari informasi diatas diperoleh model matematika sebagai berikut :
           .... + .... + ....  =                            (1)
           .... + .... + ....  =                             (2)
           .... + .... + ....  =                             (3)
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