Question

logx – 1 16 = 4

solve for x

Answer 1

the x-1 is the base

Answer 2

\[\log_{x-1}16=4 \]
\[\log_{x-1}2^4=2^2 \]
\[(x-1)^4=2^4\]
\[x-1=2\]
\[x=3\]