I don't know how to begin, how do I get two answers from one given expression? Sorry if I sound dumb but any help will be greatly appreciated! Thanks in advance.Given that $\displaystyle 10^{2n} \times 5^{4-3n} = 2^x \times 5^y$, express y in terms of n.

Answer: $\displaystyle x = 2n$, $\displaystyle y = 4 - n$