(2/3)^x-1=27/8, Find x. Please, a step-by-step explanation.​

x=-2

Step-by-step explanation:

(2/3)^x-1=27/8

Rewriting the right hand side

(2/3)^x-1=(3/2)^3

We know that a^-b = 1/a^b  Hint: { 1/(3/2) = 2/3}

(2/3)^x-1=(2/3) ^-3

The bases are the same, so the exponents are the same

x-1 = -3

x -1+1 = -3+1

x = -2

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right

it is c, trust i got your back lol

step-by-step explanation: