Subtract 45/28 from 20/4
1st number: 5 0/4, 2nd number: 1 17/28
20/4 - 45/28 is 95/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
20/4 = 20 × 7/4 × 7 = 140/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
45/28 = 45 × 1/28 × 1 = 45/28 - Subtract the two like fractions:
140/28 - 45/28 = 140 - 45/28 = 95/28 - In mixed form: 311/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4-45/28 20/4-90/28 20/8-45/28 20/4-45/56 60/4-45/28 20/12-45/28 20/4-45/84 20/28-45/28