Add 75/20 and 24/81
1st number: 3 15/20, 2nd number: 24/81
75/20 + 24/81 is 437/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 81 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 20 × 81 = 1620,
75/20 = 75 × 81/20 × 81 = 6075/1620 - Likewise, for the 2nd fraction, since 81 × 20 = 1620,
24/81 = 24 × 20/81 × 20 = 480/1620 - Add the two like fractions:
6075/1620 + 480/1620 = 6075 + 480/1620 = 6555/1620 - 6555/1620 simplified gives 437/108
- So, 75/20 + 24/81 = 437/108
In mixed form: 45/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/20+48/81 75/40+24/81 75/20+72/81 75/60+24/81