Add 84/15 and 72/5
1st number: 5 9/15, 2nd number: 14 2/5
84/15 + 72/5 is 20/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
84/15 = 84 × 1/15 × 1 = 84/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
72/5 = 72 × 3/5 × 3 = 216/15 - Add the two like fractions:
84/15 + 216/15 = 84 + 216/15 = 300/15 - 300/15 simplified gives 20/1
- So, 84/15 + 72/5 = 20/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+72/5 84/15+72/10 84/45+72/5 84/15+72/15 84/75+72/5 84/15+72/25 84/15+72/35