CPM Homework Help : INT1 Problem 10-23

Quinn started off with twice as much candy as Denali, but then he ate $4$ pieces. When Quinn and Denali put their candy together, they now have a total of $50$ pieces. How many pieces of candy did Denali start with?

Hint 1:

Let $x$ represent the number of pieces of candy that Denali had.
What algebraic expression would represent Quinn's number of pieces of candy?

Hint 2:

Quinn would have $2x$ pieces of candy to begin with.
After he ate four pieces, he would have how many pieces of candy?

More Help:

Create an equation representing the sum of their two candy supplies that should equal to $50$ .