Question

2*2x : 8*x-5 = 4

Tentukan HP

Answer 1

2^(2x) : 8^(x-5) = 4
2^(2x) = 4  . 8^(x-5)
2^(2x) = 2^2  . 2^(3(x-5))
2^(2x) = 2^2  . 2^(3x-15)
2^(2x) = 2^(3x-15+2)
2^(2x) = 2^(3x-13) 
2x=3x-13
3x-2x=13
x=13