Subtract 21/30 from 75/10
1st number: 7 5/10, 2nd number: 21/30
75/10 - 21/30 is 34/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
75/10 = 75 × 3/10 × 3 = 225/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Subtract the two like fractions:
225/30 - 21/30 = 225 - 21/30 = 204/30 - After reducing the fraction, the answer is 34/5
- In mixed form: 64/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/10-42/30 75/20-21/30 75/10-21/60 75/10-63/30 75/30-21/30 75/10-21/90 75/50-21/30 75/70-21/30