Add 15/12 and 27/7
1st number: 1 3/12, 2nd number: 3 6/7
15/12 + 27/7 is 143/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
27/7 = 27 × 12/7 × 12 = 324/84 - Add the two like fractions:
105/84 + 324/84 = 105 + 324/84 = 429/84 - 429/84 simplified gives 143/28
- So, 15/12 + 27/7 = 143/28
In mixed form: 53/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+27/7 15/12+54/7 15/24+27/7 15/12+27/14 45/12+27/7 15/12+81/7 15/36+27/7 15/12+27/21 75/12+27/7 15/60+27/7 15/12+27/35 15/84+27/7 15/12+27/49