Add 28/10 and 21/25
1st number: 2 8/10, 2nd number: 21/25
28/10 + 21/25 is 91/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 25 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 10 × 5 = 50,
28/10 = 28 × 5/10 × 5 = 140/50 - Likewise, for the 2nd fraction, since 25 × 2 = 50,
21/25 = 21 × 2/25 × 2 = 42/50 - Add the two like fractions:
140/50 + 42/50 = 140 + 42/50 = 182/50 - 182/50 simplified gives 91/25
- So, 28/10 + 21/25 = 91/25
In mixed form: 316/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10+21/25 28/10+42/25 28/20+21/25 28/10+21/50 84/10+21/25 28/10+63/25 28/30+21/25 28/10+21/75 28/50+21/25 28/70+21/25