nilai 1/2 log (x - 3 ) - 1/2 log x = -1 nilai x adalah?

½.log (x-3)/x = -1
½.log (x-3)/x = -1.log10
½(x-3)/x = -10
½x-3/2 = -10x <-- dikali 2
x-3 = -20x
x+20x = 3
21x = 3
x = 3/21
x = 1/7

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Mapel Matematika
Bab Logaritma

1/2log(x - 3) - 1/2logx = -1
1/2log(x - 3)/x = 1/2log(2)
(x - 3)/x = 2
x - 3 = 2x
-x = 3
x = -3