Add 72/20 and 9/5
1st number: 3 12/20, 2nd number: 1 4/5
72/20 + 9/5 is 27/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
9/5 = 9 × 4/5 × 4 = 36/20 - Add the two like fractions:
72/20 + 36/20 = 72 + 36/20 = 108/20 - 108/20 simplified gives 27/5
- So, 72/20 + 9/5 = 27/5
In mixed form: 52/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+18/5 72/40+9/5 72/20+9/10 72/20+27/5 72/60+9/5 72/20+9/15 72/20+45/5 72/20+9/25 72/20+63/5 72/20+9/35