If $2^8=16^x$, find $x$.
I recognize that 16 is a power of 2, so I can rewrite it as $2^4$. That means the equation becomes $2^8=2^{4x}$. Now I can use the property of exponents that says if the bases are equal, then the exponents must be equal too. So I can set $8=4x$ and solve for $x$. Dividing both sides by 4, I get $x=2$. 