Add 1/72 and 15/20
1/72 + 15/20 is 55/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
1/72 = 1 × 5/72 × 5 = 5/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
15/20 = 15 × 18/20 × 18 = 270/360 - Add the two like fractions:
5/360 + 270/360 = 5 + 270/360 = 275/360 - 275/360 simplified gives 55/72
- So, 1/72 + 15/20 = 55/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/72+15/20 1/72+30/20 1/72+15/40 3/72+15/20 1/72+45/20 1/72+15/60 5/72+15/20 1/72+75/20 7/72+15/20