nilai x yang memenuhi 4 pangkat 3x-1 = 1/8x+1

4^3x-1 = 1 / 8^x+1

(2²)^3x-1 = (2-³)^x+1

=> 6x - 2 = - 3x - 3

=> 6x + 3x = 2 - 3

=> 9x = - 1

=> x = - 1/9