Subtract 21/24 from 25/35
25/35 - 21/24 is -9/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 24 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 35 × 24 = 840,
25/35 = 25 × 24/35 × 24 = 600/840 - Likewise, for the 2nd fraction, since 24 × 35 = 840,
21/24 = 21 × 35/24 × 35 = 735/840 - Subtract the two like fractions:
600/840 - 735/840 = 600 - 735/840 = -135/840 - After reducing the fraction, the answer is -9/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/35-21/24 25/35-42/24 25/70-21/24 25/35-21/48 75/35-21/24 25/35-63/24 25/35-21/72