Add 28/84 and 27/20
1st number: 28/84, 2nd number: 1 7/20
28/84 + 27/20 is 101/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
28/84 = 28 × 5/84 × 5 = 140/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
27/20 = 27 × 21/20 × 21 = 567/420 - Add the two like fractions:
140/420 + 567/420 = 140 + 567/420 = 707/420 - 707/420 simplified gives 101/60
- So, 28/84 + 27/20 = 101/60
In mixed form: 141/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84+27/20 28/84+54/20 28/84+27/40 28/84+81/20 28/84+27/60