Add 2/20 and 3/72
2/20 + 3/72 is 17/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
2/20 = 2 × 18/20 × 18 = 36/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
3/72 = 3 × 5/72 × 5 = 15/360 - Add the two like fractions:
36/360 + 15/360 = 36 + 15/360 = 51/360 - 51/360 simplified gives 17/120
- So, 2/20 + 3/72 = 17/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20+3/72 2/20+6/72 2/40+3/72 6/20+3/72 2/20+9/72 2/60+3/72 10/20+3/72 2/20+15/72 14/20+3/72 2/20+21/72