Subtract 9/35 from 21/24
21/24 - 9/35 is 173/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 35 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
21/24 = 21 × 35/24 × 35 = 735/840 - Likewise, for the 2nd fraction, since 35 × 24 = 840,
9/35 = 9 × 24/35 × 24 = 216/840 - Subtract the two like fractions:
735/840 - 216/840 = 735 - 216/840 = 519/840 - After reducing the fraction, the answer is 173/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-9/35 21/24-18/35 21/48-9/35 21/24-9/70 63/24-9/35 21/24-27/35 21/72-9/35 21/24-45/35 21/24-63/35