One third is one of those rational numbers that can never be exactly written as a decimal. To change a fraction into its decimal, you divide the top number by the bottom number, and the quotient is the decimal form of the fraction. When you divide 1 by 3 , you get .333... and the 3s never stop. They just keep going on forever. That's called a "repeating" decimal.
So you need to find y in terms of x. But later, since the 12x and -12x cancel each other out. X can be any real number. And y. Depends on what real number x is.
