Add 21/30 and 28/50
21/30 + 28/50 is 63/50.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 50 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 30 × 5 = 150,
21/30 = 21 × 5/30 × 5 = 105/150 - Likewise, for the 2nd fraction, since 50 × 3 = 150,
28/50 = 28 × 3/50 × 3 = 84/150 - Add the two like fractions:
105/150 + 84/150 = 105 + 84/150 = 189/150 - 189/150 simplified gives 63/50
- So, 21/30 + 28/50 = 63/50
In mixed form: 113/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30+28/50 21/30+56/50 21/60+28/50 63/30+28/50 21/30+84/50 21/90+28/50