Subtract 28/27 from 4/45
1st number: 4/45, 2nd number: 1 1/27
4/45 - 28/27 is -128/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 45 × 3 = 135,
4/45 = 4 × 3/45 × 3 = 12/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
28/27 = 28 × 5/27 × 5 = 140/135 - Subtract the two like fractions:
12/135 - 140/135 = 12 - 140/135 = -128/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-28/27 4/45-56/27 4/90-28/27 4/45-28/54 12/45-28/27 4/45-84/27 4/45-28/81 20/45-28/27 28/45-28/27