Add 20/15 and 27/84
1st number: 1 5/15, 2nd number: 27/84
20/15 + 27/84 is 139/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
20/15 = 20 × 28/15 × 28 = 560/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Add the two like fractions:
560/420 + 135/420 = 560 + 135/420 = 695/420 - 695/420 simplified gives 139/84
- So, 20/15 + 27/84 = 139/84
In mixed form: 155/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+27/84 20/15+54/84 20/30+27/84 60/15+27/84 20/15+81/84 20/45+27/84 20/75+27/84