Add 81/70 and 35/15
1st number: 1 11/70, 2nd number: 2 5/15
81/70 + 35/15 is 733/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
35/15 = 35 × 14/15 × 14 = 490/210 - Add the two like fractions:
243/210 + 490/210 = 243 + 490/210 = 733/210 - So, 81/70 + 35/15 = 733/210
In mixed form: 3103/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/70+70/15 81/70+35/30 81/70+35/45 81/70+35/75