Simplify: What is 3/5x + x?

To simplify the expression ( \frac{3}{5}x + x ), we first need to express ( x ) in a form that can easily combine with ( \frac{3}{5}x ). Since ( x ) can be rewritten as ( \frac{5}{5}x ) (to have a common denominator with ( \frac{3}{5}x )), we can proceed with the addition:

[

\frac{3}{5}x + \frac{5}{5}x = \left(\frac{3 + 5}{5}\right)x = \frac{8}{5}x.

]

This shows that the sum of ( \frac{3}{5}x ) and ( x ) is indeed ( \frac{8}{5}x ). The correct response accurately reflects this simplification. Thus, ( \frac{8}{5}x ) is the final answer.