Question

2^{x - 1} - 16 = 16

Answer 1

2^{x - 1} = 16 + 16 = 32

Mà: 2⁵ = 32

=> x - 1 = 5 

x = 5 + 1

x = 6 

Answer 2

    2^x-1-16=16

=>2^x:16-16=16

=>2^x:16=16+16

=>2^x:16=32

=>2^x=32x16

=>2^x=512

=>2^x=2⁹

=>x=9