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Nilai a yang memenuhi 7 a + 1 = 3 5 a − 1 adalah ....

Nilai a yang memenuhi  adalah ....

  1. begin mathsize 14px style 2 times log presubscript blank presuperscript 7 invisible function application 5 plus 1 end style  

  2. begin mathsize 14px style 2 times log presubscript blank presuperscript 7 invisible function application 5 minus 1 end style  

  3. begin mathsize 14px style 2 times log presubscript blank presuperscript 7 invisible function application 5 minus 2 end style  

  4. begin mathsize 14px style 2 times log presubscript blank presuperscript 5 invisible function application 7 minus 1 end style  

  5. begin mathsize 14px style 2 times log presubscript blank presuperscript 5 invisible function application 7 plus 1 end style  

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S. Dwi

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begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 7 to the power of a plus 1 end exponent end cell equals cell 35 to the power of a minus 1 end exponent end cell row cell 7 to the power of a times 7 end cell equals cell 35 to the power of a over 35 end cell row cell 7 to the power of a times 7 end cell equals cell 1 over 35 times 7 to the power of a times 5 to the power of a end cell row 7 equals cell 1 over 35 times 5 to the power of a end cell row cell 5 to the power of a end cell equals cell 7 times 35 end cell row cell log presubscript blank presuperscript 5 invisible function application 5 to the power of a end cell equals cell scriptbase log left parenthesis invisible function application 7 times 35 right parenthesis end scriptbase presubscript blank presuperscript 5 end cell row a equals cell scriptbase log left parenthesis end scriptbase presubscript blank presuperscript 5 invisible function application 7 times 7 times 5 right parenthesis end cell row a equals cell log presubscript blank presuperscript 5 invisible function application 7 plus log presubscript blank presuperscript 5 invisible function application 7 plus log presubscript blank presuperscript 5 invisible function application 5 end cell row a equals cell 2 times log presubscript blank presuperscript 5 invisible function application 7 plus 1 end cell end table end style    

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