Add 56/10 and 21/84
1st number: 5 6/10, 2nd number: 21/84
56/10 + 21/84 is 117/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
56/10 = 56 × 42/10 × 42 = 2352/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
21/84 = 21 × 5/84 × 5 = 105/420 - Add the two like fractions:
2352/420 + 105/420 = 2352 + 105/420 = 2457/420 - 2457/420 simplified gives 117/20
- So, 56/10 + 21/84 = 117/20
In mixed form: 517/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10+42/84 56/20+21/84 56/10+63/84 56/30+21/84 56/50+21/84 56/70+21/84