Add 72/10 and 9/20
1st number: 7 2/10, 2nd number: 9/20
72/10 + 9/20 is 153/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
72/10 = 72 × 2/10 × 2 = 144/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
9/20 = 9 × 1/20 × 1 = 9/20 - Add the two like fractions:
144/20 + 9/20 = 144 + 9/20 = 153/20 - So, 72/10 + 9/20 = 153/20
In mixed form: 713/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+18/20 72/20+9/20 72/10+9/40 72/10+27/20 72/30+9/20 72/10+9/60 72/10+45/20 72/50+9/20 72/10+63/20 72/70+9/20