Add 54/15 and 27/84
1st number: 3 9/15, 2nd number: 27/84
54/15 + 27/84 is 549/140.
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,
54/15 = 54 × 28/15 × 28 = 1512/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
27/84 = 27 × 5/84 × 5 = 135/420 - Add the two like fractions:
1512/420 + 135/420 = 1512 + 135/420 = 1647/420 - 1647/420 simplified gives 549/140
- So, 54/15 + 27/84 = 549/140
In mixed form: 3129/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15+54/84 54/30+27/84 54/15+81/84 54/45+27/84 54/75+27/84