Add.

2x/5 + 3x-1/x

To add these two fractions, we first need to find a common denominator. The common denominator is the least common multiple (LCM) of the denominators. In this case, the denominators are 5 and x. Since x is a variable, we cannot find the LCM directly, so we keep the denominators separate.

The first fraction has a denominator of 5, and the second fraction has a denominator of x. To make them both have a common denominator, we multiply the first fraction by x and the second fraction by 5. This results in:

(2x/5) * (x/x) + (3x-1/x) * (5/5)

Simplifying this expression, we get:

(2x^2/5x) + (15x-5)/5x

Now that we have a common denominator, we can add the fractions by simply adding the numerators together, while keeping the denominator the same:

(2x^2 + 15x - 5)/(5x)