Add 24/81 and 45/20
1st number: 24/81, 2nd number: 2 5/20
24/81 + 45/20 is 275/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
24/81 = 24 × 20/81 × 20 = 480/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
45/20 = 45 × 81/20 × 81 = 3645/1620 - Add the two like fractions:
480/1620 + 3645/1620 = 480 + 3645/1620 = 4125/1620 - 4125/1620 simplified gives 275/108
- So, 24/81 + 45/20 = 275/108
In mixed form: 259/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/81+45/20 24/81+90/20 24/81+45/40 72/81+45/20 24/81+45/60