Question

9. If 2^x-1=1/8
then the value of x is
​

Answer 1

Answer:

Step-by-step explanation:

$\frac{1}{8} = 2^{-3}$

So,

$2^{x-1} = 2^{-3}$

=> bases are same, we can equate exponents

=> x-1 = -3

x= -2