Add 3/20 and 6/72
3/20 + 6/72 is 7/30.
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,
3/20 = 3 × 18/20 × 18 = 54/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
6/72 = 6 × 5/72 × 5 = 30/360 - Add the two like fractions:
54/360 + 30/360 = 54 + 30/360 = 84/360 - 84/360 simplified gives 7/30
- So, 3/20 + 6/72 = 7/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20+6/72 3/20+12/72 3/40+6/72 9/20+6/72 3/20+18/72 3/60+6/72 15/20+6/72 3/20+30/72 21/20+6/72 3/20+42/72