Add 8/10 and 21/56
8/10 + 21/56 is 47/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 10 × 28 = 280,
8/10 = 8 × 28/10 × 28 = 224/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Add the two like fractions:
224/280 + 105/280 = 224 + 105/280 = 329/280 - 329/280 simplified gives 47/40
- So, 8/10 + 21/56 = 47/40
In mixed form: 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/10+21/56 8/10+42/56 8/20+21/56 24/10+21/56 8/10+63/56 8/30+21/56 40/10+21/56 8/50+21/56 56/10+21/56 8/70+21/56