Question

2^x-1-12=20

Answer 1

\(2^{x-1}-12=20\\ \Rightarrow2^{x-1}=32\\ \Rightarrow2^{x-1}=2^5\\ \Rightarrow x-1=5\\ \Rightarrow x=6\)

Answer 2

2^x-1 = 20 + 12 = 32

2^x-1 = 2⁵

⇒ x - 1 = 5

x = 1 + 5 

x = 6

Answer 3

\(\text{2^{x-1}-12=20}\\ 2^{x-1}=20+12\\ 2^{x-1}=32\\ 2^{x-1}=2^5\\ =>x-1=5\\ =>x=6\)

Answer 4

2^x-1 = 20 + 12 = 32

2^x-1 = 2⁵

⇒ x - 1 = 5

x = 1 + 5 

x = 6

Answer 5

2x−1−12=20

⇒2x−1=32

⇒2x−1=25

⇒x−1=5

⇒x=6