Subtract 1/4 from 28/45
28/45 - 1/4 is 67/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
28/45 = 28 × 4/45 × 4 = 112/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
1/4 = 1 × 45/4 × 45 = 45/180 - Subtract the two like fractions:
112/180 - 45/180 = 112 - 45/180 = 67/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45-1/4 28/45-2/4 28/90-1/4 28/45-1/8 84/45-1/4 28/45-3/4 28/45-1/12 28/45-5/4 28/45-1/20 28/45-7/4 28/45-1/28