Subtract 9/28 from 84/20
1st number: 4 4/20, 2nd number: 9/28
84/20 - 9/28 is 543/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
84/20 = 84 × 7/20 × 7 = 588/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
9/28 = 9 × 5/28 × 5 = 45/140 - Subtract the two like fractions:
588/140 - 45/140 = 588 - 45/140 = 543/140 - In mixed form: 3123/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-18/28 84/40-9/28 84/20-9/56 84/20-27/28 84/60-9/28 84/20-9/84 84/20-45/28 84/20-63/28