Add 81/50 and 42/81
1st number: 1 31/50, 2nd number: 42/81
81/50 + 42/81 is 2887/1350.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 81 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 50 × 81 = 4050,
81/50 = 81 × 81/50 × 81 = 6561/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
42/81 = 42 × 50/81 × 50 = 2100/4050 - Add the two like fractions:
6561/4050 + 2100/4050 = 6561 + 2100/4050 = 8661/4050 - 8661/4050 simplified gives 2887/1350
- So, 81/50 + 42/81 = 2887/1350
In mixed form: 2187/1350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/50+84/81