Explanation:
To rewrite the fractions 14/15 and 19/20 with a common denominator, we can find the least common multiple (LCM) of the denominators, which is 60 in this case. Then, we'll adjust the fractions accordingly:
For 14/15:
Multiply both the numerator and denominator by 4 to make the denominator 60:
(14/15) * (4/4) = 56/60
For 19/20:
Multiply both the numerator and denominator by 3 to make the denominator 60:
(19/20) * (3/3) = 57/60
Now, both fractions have the same denominator of 60:
14/15 becomes 56/60, and 19/20 becomes 57/60.