Answer: 
Step-by-step explanation:
According to the information given in the exercise, you know that:
of the group's video games is at Jerome's house.
of the group's video games is at Mario's house.
Then, you need to add those fractions in order to solve the exercise.
Notice that the denominators of the fractions are different; so in this case, you need to multiply them in order to find the Least Common Denominator (LCD). This is:

Now, the procedure is:
1- Divide each original denominator by the LCD and multiply the numerators by the quotient obtained.
2- Add the products (This sum will be the numerator).
Then, you get the following result:

Answer:
He rented 82 games
Step-by-step explanation:
296=3x+50
246=3x
x=82
Answer:
33 yards
Step-by-step explanation:
To find the number of ribbons that she used to decorate the dresses can be gotten by subtracting the amount of ribbon left from the total amount of ribbon she had.
She bought 100 yards. She has 67 yards left.
Therefore, the amount of ribbon she used for the dresses is:
100 - 67 = 33 yards