Question

\(2^{12}:8^{x-1}=8\)

Answer 1

\(2^{12}:8^{x-1}=8\\ \Rightarrow2^{12}:2^{3x-3}=2^3\\ \Rightarrow2^{3x-3}=2^9\\ \Rightarrow3x-3=9\\ \Rightarrow x=4\)

Answer 2

\(2^{12}:8^{x-1}=8\)

\(\Rightarrow2^{12}:2^{3x-3}=2^3\)

\(\Rightarrow2^{3x-3}=2^{12}:2^3=2^9\)

\(\Rightarrow3x-3=9\Rightarrow3x=12\Rightarrow x=4\)

Answer 3