Matematika

Pertanyaan

jika 1/4(x+10)=3/8(x-2)+5/8 maka nilai (x-9)

1 Jawaban

  • Mapel : Matematika
    Bab : SPLSV

    1/4 (x + 10) = 3/8(x - 2) + 5/8
    1/4x + 10/4 = 3/8x - 6/8 + 5/8
    1/4x + 10/4 = 3/8x - 1/8
    ---------------------------------------- dikali 8
         2x + 20  = 3x - 1
          2x - 3x  = -1 - 20
                  -x  = -21
                    x = 21

    x - 9 = 21 - 9
            = 12

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