Subtract 28/21 from 50/5
1st number: 10 0/5, 2nd number: 1 7/21
50/5 - 28/21 is 26/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
50/5 = 50 × 21/5 × 21 = 1050/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
28/21 = 28 × 5/21 × 5 = 140/105 - Subtract the two like fractions:
1050/105 - 140/105 = 1050 - 140/105 = 910/105 - After reducing the fraction, the answer is 26/3
- In mixed form: 82/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/5-56/21 50/10-28/21 50/5-28/42 50/5-84/21 50/15-28/21 50/5-28/63 50/25-28/21 50/35-28/21