Subtract 81/30 from 8/24
1st number: 8/24, 2nd number: 2 21/30
8/24 - 81/30 is -71/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
8/24 = 8 × 5/24 × 5 = 40/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
81/30 = 81 × 4/30 × 4 = 324/120 - Subtract the two like fractions:
40/120 - 324/120 = 40 - 324/120 = -284/120 - After reducing the fraction, the answer is -71/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/24-81/30 8/48-81/30 8/24-81/60 8/72-81/30 8/24-81/90 40/24-81/30 56/24-81/30