Subtract 5/28 from 21/50
21/50 - 5/28 is 169/700.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 28 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 50 × 14 = 700,
21/50 = 21 × 14/50 × 14 = 294/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
5/28 = 5 × 25/28 × 25 = 125/700 - Subtract the two like fractions:
294/700 - 125/700 = 294 - 125/700 = 169/700
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50-5/28 21/50-10/28 21/50-5/56 63/50-5/28 21/50-15/28 21/50-5/84 21/50-25/28 21/50-35/28