Subtract 45/30 from 27/8
1st number: 3 3/8, 2nd number: 1 15/30
27/8 - 45/30 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
27/8 = 27 × 15/8 × 15 = 405/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
45/30 = 45 × 4/30 × 4 = 180/120 - Subtract the two like fractions:
405/120 - 180/120 = 405 - 180/120 = 225/120 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8-45/30 27/8-90/30 27/16-45/30 27/8-45/60 81/8-45/30 27/24-45/30 27/8-45/90 27/40-45/30 27/56-45/30