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Sabtu, 22 November 2014

contoh soal persamaan linier satu variabel danpenyelesaiannya

  1. 5x+12=30+4x tentukan nilai x
          jawab : 5x-4x=30-12

                     x=18
    
     2.  2(x+10)=4(3x-2) tebtukan nilai x
           jawab : 2x+20=12x-8
                       2x-12x=(-20)-8
                       (-10x)=(-28)
                       x=(-28)/(-10)

                       x=2,8

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