2/5+5/8

To add fractions, you need to find a common denominator. In this case, the least common multiple (LCM) of 5 and 8 is 40.

To convert 2/5 into a fraction with a denominator of 40, multiply both the numerator and denominator by 8: (2/5) * (8/8) = 16/40

To convert 5/8 into a fraction with a denominator of 40, multiply both the numerator and denominator by 5: (5/8) * (5/5) = 25/40

Now that the fractions have the same denominator, you can add them together: 16/40 + 25/40 = 41/40

So, 2/5 + 5/8 = 41/40.