Subtract 21/8 from 9/60
1st number: 9/60, 2nd number: 2 5/8
9/60 - 21/8 is -99/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
9/60 = 9 × 2/60 × 2 = 18/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
21/8 = 21 × 15/8 × 15 = 315/120 - Subtract the two like fractions:
18/120 - 315/120 = 18 - 315/120 = -297/120 - After reducing the fraction, the answer is -99/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/60-21/8 9/60-42/8 9/60-21/16 27/60-21/8 9/60-63/8 9/60-21/24 45/60-21/8 9/60-21/40 63/60-21/8 9/60-21/56