³log(2x-1)-³log(x-3)=³log7

Logaritma
SMA Kelas X

³log(2x - 1) - ³log(x - 3) = ³log7
³log[(2x - 1) / (x - 3)] = ³log7

(2x - 1) / (x - 3) = 7
2x - 1 = 7(x - 3)
2x - 1 = 7x - 21
2x - 7x = -21 + 1
-5x = -20
x = 4