Subtract 21/35 from 8/24
8/24 - 21/35 is -4/15.
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,
8/24 = 8 × 35/24 × 35 = 280/840 - Likewise, for the 2nd fraction, since 35 × 24 = 840,
21/35 = 21 × 24/35 × 24 = 504/840 - Subtract the two like fractions:
280/840 - 504/840 = 280 - 504/840 = -224/840 - After reducing the fraction, the answer is -4/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/24-21/35 8/24-42/35 8/48-21/35 8/24-21/70 8/24-63/35 8/72-21/35 40/24-21/35 56/24-21/35