Add 81/21 and 14/60
1st number: 3 18/21, 2nd number: 14/60
81/21 + 14/60 is 859/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
81/21 = 81 × 20/21 × 20 = 1620/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
14/60 = 14 × 7/60 × 7 = 98/420 - Add the two like fractions:
1620/420 + 98/420 = 1620 + 98/420 = 1718/420 - 1718/420 simplified gives 859/210
- So, 81/21 + 14/60 = 859/210
In mixed form: 419/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/21+28/60 81/42+14/60 81/21+42/60 81/63+14/60 81/21+70/60 81/21+98/60