Add 21/56 and 8/10
21/56 + 8/10 is 47/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 10 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Likewise, for the 2nd fraction, since 10 × 28 = 280,
8/10 = 8 × 28/10 × 28 = 224/280 - Add the two like fractions:
105/280 + 224/280 = 105 + 224/280 = 329/280 - 329/280 simplified gives 47/40
- So, 21/56 + 8/10 = 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: 42/56+8/10 21/56+16/10 21/56+8/20 63/56+8/10 21/56+24/10 21/56+8/30 21/56+40/10 21/56+8/50 21/56+56/10 21/56+8/70