Add 72/15 and 81/54
1st number: 4 12/15, 2nd number: 1 27/54
72/15 + 81/54 is 63/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
72/15 = 72 × 18/15 × 18 = 1296/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
81/54 = 81 × 5/54 × 5 = 405/270 - Add the two like fractions:
1296/270 + 405/270 = 1296 + 405/270 = 1701/270 - 1701/270 simplified gives 63/10
- So, 72/15 + 81/54 = 63/10
In mixed form: 63/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+81/54 72/45+81/54 72/75+81/54