Subtract 9/35 from 9/21
9/21 - 9/35 is 6/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
9/21 = 9 × 5/21 × 5 = 45/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
9/35 = 9 × 3/35 × 3 = 27/105 - Subtract the two like fractions:
45/105 - 27/105 = 45 - 27/105 = 18/105 - After reducing the fraction, the answer is 6/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21-9/35 9/21-18/35 9/42-9/35 9/21-9/70 27/21-9/35 9/21-27/35 9/63-9/35 45/21-9/35 9/21-45/35 63/21-9/35 9/21-63/35