Add 21/28 and 81/50
1st number: 21/28, 2nd number: 1 31/50
21/28 + 81/50 is 237/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 50 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
21/28 = 21 × 25/28 × 25 = 525/700 - Likewise, for the 2nd fraction, since 50 × 14 = 700,
81/50 = 81 × 14/50 × 14 = 1134/700 - Add the two like fractions:
525/700 + 1134/700 = 525 + 1134/700 = 1659/700 - 1659/700 simplified gives 237/100
- So, 21/28 + 81/50 = 237/100
In mixed form: 237/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+81/50 21/56+81/50 63/28+81/50 21/84+81/50