Add 81/15 and 63/70
1st number: 5 6/15, 2nd number: 63/70
81/15 + 63/70 is 63/10.
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,
81/15 = 81 × 14/15 × 14 = 1134/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
63/70 = 63 × 3/70 × 3 = 189/210 - Add the two like fractions:
1134/210 + 189/210 = 1134 + 189/210 = 1323/210 - 1323/210 simplified gives 63/10
- So, 81/15 + 63/70 = 63/10
In mixed form: 63/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/30+63/70 81/45+63/70 81/75+63/70