Add 15/60 and 8/81
15/60 + 8/81 is 113/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 60 × 27 = 1620,
15/60 = 15 × 27/60 × 27 = 405/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
8/81 = 8 × 20/81 × 20 = 160/1620 - Add the two like fractions:
405/1620 + 160/1620 = 405 + 160/1620 = 565/1620 - 565/1620 simplified gives 113/324
- So, 15/60 + 8/81 = 113/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/60+8/81 15/60+16/81 45/60+8/81 15/60+24/81 75/60+8/81 15/60+40/81 15/60+56/81