Question

[Pham Trong Bach]

c) $2^{2016}.2^{x-1}=2^{2015}$

Answer 1

[Cao Minh Tâm]

c)  2 2016 . 2 x - 1 = 2 2015

2 x - 1 = 2 2015 : 2 2016

2 x - 1 = 2 2015 - 2016

2 x - 1 = 2 - 1

⇒ x – 1 = -1

x = -1 + 1

x = 0