Respuesta :
Answer:
1/2
Step-by-step explanation:
You want to find a common denominator. To do that you either multiply or divide both variables, along with doing the same to the value in them. Or in this case, you'd multiply the 2/5 by 2 to have the same denominator as 1/10 which would result in 4/10 and 1/10. Or you could divide 1/10 and end up with .5/5 and 2/5. In each situation, you'd be adding the two expressions and having half. The possible answers would be 2.5/5 | 5/10 | 1/2
