Add 84/15 and 81/10
1st number: 5 9/15, 2nd number: 8 1/10
84/15 + 81/10 is 137/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
84/15 = 84 × 2/15 × 2 = 168/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
81/10 = 81 × 3/10 × 3 = 243/30 - Add the two like fractions:
168/30 + 243/30 = 168 + 243/30 = 411/30 - 411/30 simplified gives 137/10
- So, 84/15 + 81/10 = 137/10
In mixed form: 137/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+81/10 84/15+81/20 84/45+81/10 84/15+81/30 84/75+81/10 84/15+81/50 84/15+81/70