Add 72/20 and 56/5
1st number: 3 12/20, 2nd number: 11 1/5
72/20 + 56/5 is 74/5.
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,
56/5 = 56 × 4/5 × 4 = 224/20 - Add the two like fractions:
72/20 + 224/20 = 72 + 224/20 = 296/20 - 296/20 simplified gives 74/5
- So, 72/20 + 56/5 = 74/5
In mixed form: 144/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+56/5 72/20+56/10 72/60+56/5 72/20+56/15 72/20+56/25 72/20+56/35