Add 6/81 and 75/20
1st number: 6/81, 2nd number: 3 15/20
6/81 + 75/20 is 413/108.
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,
6/81 = 6 × 20/81 × 20 = 120/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
75/20 = 75 × 81/20 × 81 = 6075/1620 - Add the two like fractions:
120/1620 + 6075/1620 = 120 + 6075/1620 = 6195/1620 - 6195/1620 simplified gives 413/108
- So, 6/81 + 75/20 = 413/108
In mixed form: 389/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/81+75/20 6/81+75/40 18/81+75/20 6/81+75/60 30/81+75/20 42/81+75/20