Subtract 3/45 from 81/28
1st number: 2 25/28, 2nd number: 3/45
81/28 - 3/45 is 1187/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
81/28 = 81 × 45/28 × 45 = 3645/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
3/45 = 3 × 28/45 × 28 = 84/1260 - Subtract the two like fractions:
3645/1260 - 84/1260 = 3645 - 84/1260 = 3561/1260 - After reducing the fraction, the answer is 1187/420
- In mixed form: 2347/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/28-6/45 81/56-3/45 81/28-3/90 81/28-9/45 81/84-3/45 81/28-15/45 81/28-21/45