Add 72/27 and 21/5
1st number: 2 18/27, 2nd number: 4 1/5
72/27 + 21/5 is 103/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 5 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
72/27 = 72 × 5/27 × 5 = 360/135 - Likewise, for the 2nd fraction, since 5 × 27 = 135,
21/5 = 21 × 27/5 × 27 = 567/135 - Add the two like fractions:
360/135 + 567/135 = 360 + 567/135 = 927/135 - 927/135 simplified gives 103/15
- So, 72/27 + 21/5 = 103/15
In mixed form: 613/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/27+42/5 72/54+21/5 72/27+21/10 72/27+63/5 72/81+21/5 72/27+21/15 72/27+21/25 72/27+21/35