Add 10/72 and 21/30
10/72 + 21/30 is 151/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
10/72 = 10 × 5/72 × 5 = 50/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
21/30 = 21 × 12/30 × 12 = 252/360 - Add the two like fractions:
50/360 + 252/360 = 50 + 252/360 = 302/360 - 302/360 simplified gives 151/180
- So, 10/72 + 21/30 = 151/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/72+21/30 10/72+42/30 10/72+21/60 30/72+21/30 10/72+63/30 10/72+21/90 50/72+21/30 70/72+21/30