Subtract 1/45 from 27/15
1st number: 1 12/15, 2nd number: 1/45
27/15 - 1/45 is 16/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
27/15 = 27 × 3/15 × 3 = 81/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
1/45 = 1 × 1/45 × 1 = 1/45 - Subtract the two like fractions:
81/45 - 1/45 = 81 - 1/45 = 80/45 - After reducing the fraction, the answer is 16/9
- In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15-1/45 27/15-2/45 27/30-1/45 27/15-1/90 81/15-1/45 27/15-3/45 27/45-1/45 27/15-5/45 27/75-1/45 27/15-7/45