Add 21/28 and 21/50
21/28 + 21/50 is 117/100.
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,
21/50 = 21 × 14/50 × 14 = 294/700 - Add the two like fractions:
525/700 + 294/700 = 525 + 294/700 = 819/700 - 819/700 simplified gives 117/100
- So, 21/28 + 21/50 = 117/100
In mixed form: 117/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/28+21/50 21/28+42/50 21/56+21/50 63/28+21/50 21/28+63/50 21/84+21/50