Subtract 3/21 from 28/50
28/50 - 3/21 is 73/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
28/50 = 28 × 21/50 × 21 = 588/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
3/21 = 3 × 50/21 × 50 = 150/1050 - Subtract the two like fractions:
588/1050 - 150/1050 = 588 - 150/1050 = 438/1050 - After reducing the fraction, the answer is 73/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/50-3/21 28/50-6/21 28/50-3/42 84/50-3/21 28/50-9/21 28/50-3/63 28/50-15/21