Three eighths of the cast in a musical have to sing. What fraction of the cast does not have to sing?
8/8 - 3/8 = ?
To determine the fraction of the cast that does not have to sing, we need to subtract the fraction that does have to sing from the entire cast.
First, we need to know the total number of cast members. Let's say the musical has a total of "N" cast members.
Next, we need to calculate the fraction of the cast that does not have to sing. Since three eighths (3/8) of the cast has to sing, the fraction that does not have to sing will be the remaining cast members, which is (1 - 3/8).
To find a common denominator, multiply 8 by 1, which equals 8.
Now, we can subtract the numerator of the fraction that has to sing from the numerator of the fraction that does not have to sing and keep the denominator unchanged: (8/8 - 3/8).
Subtracting, we get 5/8 as the fraction of the cast that does not have to sing.
Therefore, 5/8 of the cast does not have to sing.