Subtract 75/5 from 10/21
1st number: 10/21, 2nd number: 15 0/5
10/21 - 75/5 is -305/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
10/21 = 10 × 5/21 × 5 = 50/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
75/5 = 75 × 21/5 × 21 = 1575/105 - Subtract the two like fractions:
50/105 - 1575/105 = 50 - 1575/105 = -1525/105 - After reducing the fraction, the answer is -305/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-75/5 10/42-75/5 10/21-75/10 30/21-75/5 10/63-75/5 10/21-75/15 50/21-75/5 10/21-75/25 70/21-75/5 10/21-75/35