Subtract 18/28 from 54/15
1st number: 3 9/15, 2nd number: 18/28
54/15 - 18/28 is 207/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
54/15 = 54 × 28/15 × 28 = 1512/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
18/28 = 18 × 15/28 × 15 = 270/420 - Subtract the two like fractions:
1512/420 - 270/420 = 1512 - 270/420 = 1242/420 - After reducing the fraction, the answer is 207/70
- In mixed form: 267/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15-36/28 54/30-18/28 54/15-18/56 54/15-54/28 54/45-18/28 54/15-18/84 54/15-90/28 54/75-18/28