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3^x = 3^4
x = 4
3Log 81 = 4
2.) 8Log 64 = 2
3.) 3Log 1/27 ⇒ 3^x = 1/27
3^x = 1/3³
3^x = 3^-3
x = -3
3Log 1/27 = -3
4.) 7Log 1/7 = -1
5.) 5Log 1/625 ⇒ 5^x = 1/625
5^x = 1/5^4
5^x = 5^-4
x = -4
5Log 1/625 = -4