Add 81/60 and 16/15
1st number: 1 21/60, 2nd number: 1 1/15
81/60 + 16/15 is 29/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
81/60 = 81 × 1/60 × 1 = 81/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
16/15 = 16 × 4/15 × 4 = 64/60 - Add the two like fractions:
81/60 + 64/60 = 81 + 64/60 = 145/60 - 145/60 simplified gives 29/12
- So, 81/60 + 16/15 = 29/12
In mixed form: 25/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/60+32/15 81/60+16/30 81/60+48/15 81/60+16/45 81/60+80/15 81/60+16/75