Add 7/21 and 28/50
7/21 + 28/50 is 67/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
7/21 = 7 × 50/21 × 50 = 350/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
28/50 = 28 × 21/50 × 21 = 588/1050 - Add the two like fractions:
350/1050 + 588/1050 = 350 + 588/1050 = 938/1050 - 938/1050 simplified gives 67/75
- So, 7/21 + 28/50 = 67/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21+28/50 7/21+56/50 7/42+28/50 7/21+84/50 7/63+28/50 35/21+28/50 49/21+28/50