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$begin mathsize 14px style Perhatikan space syarat space numerus Syarat space numerus space straight I space colon 2 x plus 8 greater than 0 2 x greater than negative 8 x greater than negative 4 Syarat space numerus space II space colon x minus 3 greater than 0 x greater than 3 log presubscript space presuperscript 3 left parenthesis 2 x plus 8 right parenthesis minus log presubscript space presuperscript 3 open parentheses x minus 3 close parentheses equals 2 log presubscript space presuperscript 3 open parentheses fraction numerator 2 x plus 8 over denominator x minus 3 end fraction close parentheses equals 2. log presubscript space presuperscript 3 3 log presubscript space presuperscript 3 open parentheses fraction numerator 2 x plus 8 over denominator x minus 3 end fraction close parentheses equals log presubscript space presuperscript 3 3 squared log presubscript space presuperscript 3 open parentheses fraction numerator 2 x plus 8 over denominator x minus 3 end fraction close parentheses equals log presubscript space presuperscript 3 9 fraction numerator 2 x plus 8 over denominator x minus 3 end fraction equals 9 2 x plus 8 equals 9 x minus 27 35 equals 7 x x equals 35 over 7 x space equals space 5 end style$