Subtract 81/24 from 24/30
1st number: 24/30, 2nd number: 3 9/24
24/30 - 81/24 is -103/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
24/30 = 24 × 4/30 × 4 = 96/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
81/24 = 81 × 5/24 × 5 = 405/120 - Subtract the two like fractions:
96/120 - 405/120 = 96 - 405/120 = -309/120 - After reducing the fraction, the answer is -103/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/30-81/24 24/60-81/24 24/30-81/48 72/30-81/24 24/90-81/24 24/30-81/72