Answer:
A. 3x/10
Step-by-step explanation:
[tex]\frac{x}{5}+\frac{x}{10}[/tex]
Find a common denominator. The lowest common denominator is 10, so match the equations to fit that denominator.
[tex](\frac{x*2}{5*2})+\frac{x}{10}\\\frac{2x}{10}+\frac{x}{10}[/tex]
Now that the denominators are the same, combine the fractions by adding the numerators.
[tex]\frac{3x}{10}[/tex]
Your answer is a.