Add 27/12 and 72/15
1st number: 2 3/12, 2nd number: 4 12/15
27/12 + 72/15 is 141/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
27/12 = 27 × 5/12 × 5 = 135/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
72/15 = 72 × 4/15 × 4 = 288/60 - Add the two like fractions:
135/60 + 288/60 = 135 + 288/60 = 423/60 - 423/60 simplified gives 141/20
- So, 27/12 + 72/15 = 141/20
In mixed form: 71/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/12+72/15 27/24+72/15 27/12+72/30 81/12+72/15 27/36+72/15 27/12+72/45 27/60+72/15 27/12+72/75 27/84+72/15