Add 72/27 and 18/20
1st number: 2 18/27, 2nd number: 18/20
72/27 + 18/20 is 107/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
72/27 = 72 × 20/27 × 20 = 1440/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
18/20 = 18 × 27/20 × 27 = 486/540 - Add the two like fractions:
1440/540 + 486/540 = 1440 + 486/540 = 1926/540 - 1926/540 simplified gives 107/30
- So, 72/27 + 18/20 = 107/30
In mixed form: 317/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/27+36/20 72/54+18/20 72/27+18/40 72/27+54/20 72/81+18/20 72/27+18/60 72/27+90/20