Add 4/15 and 81/70
1st number: 4/15, 2nd number: 1 11/70
4/15 + 81/70 is 299/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
4/15 = 4 × 14/15 × 14 = 56/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210 - Add the two like fractions:
56/210 + 243/210 = 56 + 243/210 = 299/210 - So, 4/15 + 81/70 = 299/210
In mixed form: 189/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15+81/70 4/30+81/70 12/15+81/70 4/45+81/70 20/15+81/70 4/75+81/70 28/15+81/70