Subtract 21/35 from 21/5
1st number: 4 1/5, 2nd number: 21/35
21/5 - 21/35 is 18/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 35 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
21/5 = 21 × 7/5 × 7 = 147/35 - Likewise, for the 2nd fraction, since 35 × 1 = 35,
21/35 = 21 × 1/35 × 1 = 21/35 - Subtract the two like fractions:
147/35 - 21/35 = 147 - 21/35 = 126/35 - After reducing the fraction, the answer is 18/5
- In mixed form: 33/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-21/35 21/5-42/35 21/10-21/35 21/5-21/70 63/5-21/35 21/5-63/35 21/15-21/35 21/25-21/35 21/35-21/35