Add 81/50 and 12/21
1st number: 1 31/50, 2nd number: 12/21
81/50 + 12/21 is 767/350.
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,
12/21 = 12 × 50/21 × 50 = 600/1050 - Add the two like fractions:
1701/1050 + 600/1050 = 1701 + 600/1050 = 2301/1050 - 2301/1050 simplified gives 767/350
- So, 81/50 + 12/21 = 767/350
In mixed form: 267/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/50+24/21 81/50+12/42 81/50+36/21 81/50+12/63 81/50+60/21 81/50+84/21