Add 4/72 and 15/20
4/72 + 15/20 is 29/36.
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,
4/72 = 4 × 5/72 × 5 = 20/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
15/20 = 15 × 18/20 × 18 = 270/360 - Add the two like fractions:
20/360 + 270/360 = 20 + 270/360 = 290/360 - 290/360 simplified gives 29/36
- So, 4/72 + 15/20 = 29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/72+15/20 4/72+30/20 4/72+15/40 12/72+15/20 4/72+45/20 4/72+15/60 20/72+15/20 4/72+75/20 28/72+15/20