Subtract 21/48 from 30/60
30/60 - 21/48 is 1/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 60 × 4 = 240,
30/60 = 30 × 4/60 × 4 = 120/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
21/48 = 21 × 5/48 × 5 = 105/240 - Subtract the two like fractions:
120/240 - 105/240 = 120 - 105/240 = 15/240 - After reducing the fraction, the answer is 1/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/60-42/48 30/60-21/96 90/60-21/48 30/60-63/48