Answer: The fraction of the squares that are not colored is

Step-by-step explanation: Given that Karen colors are n squares on a grid, out of which she colored
of the squares blue and
of the squares red.
We are to find the fraction of the squares that are not colored.
Total number of squares = n.
Number of squares that are colored blue is given by

and the number of the squares that are colored red is given by

So, the total number of squares that are colored will be

Therefore, the number of squares that are not colored is

Thus, the fraction of the squares that are not colored is
