Add 50/21 and 81/4
1st number: 2 8/21, 2nd number: 20 1/4
50/21 + 81/4 is 1901/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
50/21 = 50 × 4/21 × 4 = 200/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
81/4 = 81 × 21/4 × 21 = 1701/84 - Add the two like fractions:
200/84 + 1701/84 = 200 + 1701/84 = 1901/84 - So, 50/21 + 81/4 = 1901/84
In mixed form: 2253/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42+81/4 50/21+81/8 50/63+81/4 50/21+81/12 50/21+81/20 50/21+81/28