Subtract 28/21 from 50/28
1st number: 1 22/28, 2nd number: 1 7/21
50/28 - 28/21 is 19/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
50/28 = 50 × 3/28 × 3 = 150/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
28/21 = 28 × 4/21 × 4 = 112/84 - Subtract the two like fractions:
150/84 - 112/84 = 150 - 112/84 = 38/84 - After reducing the fraction, the answer is 19/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/28-56/21 50/56-28/21 50/28-28/42 50/28-84/21 50/84-28/21 50/28-28/63