Add 72/27 and 4/20
1st number: 2 18/27, 2nd number: 4/20
72/27 + 4/20 is 43/15.
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,
4/20 = 4 × 27/20 × 27 = 108/540 - Add the two like fractions:
1440/540 + 108/540 = 1440 + 108/540 = 1548/540 - 1548/540 simplified gives 43/15
- So, 72/27 + 4/20 = 43/15
In mixed form: 213/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/27+8/20 72/54+4/20 72/27+4/40 72/27+12/20 72/81+4/20 72/27+4/60 72/27+28/20