Subtract 21/60 from 18/8
1st number: 2 2/8, 2nd number: 21/60
18/8 - 21/60 is 19/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
18/8 = 18 × 15/8 × 15 = 270/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
21/60 = 21 × 2/60 × 2 = 42/120 - Subtract the two like fractions:
270/120 - 42/120 = 270 - 42/120 = 228/120 - After reducing the fraction, the answer is 19/10
- In mixed form: 19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8-21/60 18/8-42/60 18/16-21/60 54/8-21/60 18/8-63/60 18/24-21/60 90/8-21/60 18/40-21/60 18/56-21/60