Subtract 25/28 from 4/45
4/45 - 25/28 is -1013/1260.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
4/45 = 4 × 28/45 × 28 = 112/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
25/28 = 25 × 45/28 × 45 = 1125/1260 - Subtract the two like fractions:
112/1260 - 1125/1260 = 112 - 1125/1260 = -1013/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-25/28 4/45-50/28 4/90-25/28 4/45-25/56 12/45-25/28 4/45-75/28 4/45-25/84 20/45-25/28 28/45-25/28