Add 21/10 and 28/60
1st number: 2 1/10, 2nd number: 28/60
21/10 + 28/60 is 77/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
21/10 = 21 × 6/10 × 6 = 126/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
28/60 = 28 × 1/60 × 1 = 28/60 - Add the two like fractions:
126/60 + 28/60 = 126 + 28/60 = 154/60 - 154/60 simplified gives 77/30
- So, 21/10 + 28/60 = 77/30
In mixed form: 217/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+28/60 21/10+56/60 21/20+28/60 63/10+28/60 21/10+84/60 21/30+28/60 21/50+28/60 21/70+28/60