Jerome has one-half of the group’s video games at his house. Mario has two-fifths of the group’s video games at his house. What fraction of the group’s video games is either at Jerome’s house or Mario’s house?

explain how you got your answer.

One little problem with the bot's answer

1/2 + 2/5 = 9/10, not 7/10

The answer is 7/10. To get this answer, we can add the fractions of the video games at Jerome's and Mario's house. One-half plus two-fifths is equal to 7/10.