Add 81/50 and 4/21
1st number: 1 31/50, 2nd number: 4/21
81/50 + 4/21 is 1901/1050.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
81/50 = 81 × 21/50 × 21 = 1701/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
4/21 = 4 × 50/21 × 50 = 200/1050 - Add the two like fractions:
1701/1050 + 200/1050 = 1701 + 200/1050 = 1901/1050 - So, 81/50 + 4/21 = 1901/1050
In mixed form: 1851/1050
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/50+8/21 81/50+4/42 81/50+12/21 81/50+4/63 81/50+20/21 81/50+28/21