2 over 5 plus 1 over 8 equals blank plus blank equals
2 rows of 5 equals blank plus blank
To add fractions, you need a common denominator. In this case, the common denominator is 40, which is the product of 5 and 8.
First, let's convert 2/5 to have a denominator of 40:
2/5 * 8/8 = 16/40
Next, let's convert 1/8 to have a denominator of 40:
1/8 * 5/5 = 5/40
Now, we can add the fractions together:
16/40 + 5/40 = 21/40
So, the answer is 21/40.