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Jika , maka x + 2y = ….

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$open square brackets table row 3 cell negative 2 end cell row 4 4 end table close square brackets open square brackets table row x row y end table close square brackets equals open square brackets table row 2 row 0 end table close square brackets space space space space space space space space space space space space space space space space open square brackets table row x row y end table close square brackets equals open square brackets table row 3 cell negative 2 end cell row 4 4 end table close square brackets to the power of negative 1 end exponent open square brackets table row 2 row 0 end table close square brackets space space space space space space space space space space space space space space space space open square brackets table row x row y end table close square brackets equals fraction numerator 1 over denominator 12 plus 8 end fraction open square brackets table row 4 2 row cell negative 4 end cell 3 end table close square brackets to the power of space open square brackets table row 2 row 0 end table close square brackets space space space space space space space space space space space space space space space open square brackets table row x row y end table close square brackets equals 1 over 20 open square brackets table row 8 row cell negative 8 end cell end table close square brackets open square brackets table row x row y end table close square brackets equals open square brackets table row cell 8 over 20 end cell row cell negative 8 over 20 end cell end table close square brackets x plus 2 y equals 8 over 20 plus 2 open parentheses negative 8 over 20 close parentheses equals negative 8 over 20 equals negative 2 over 5$

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