Add 21/56 and 30/10
1st number: 21/56, 2nd number: 3 0/10
21/56 + 30/10 is 27/8.
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,
30/10 = 30 × 28/10 × 28 = 840/280 - Add the two like fractions:
105/280 + 840/280 = 105 + 840/280 = 945/280 - 945/280 simplified gives 27/8
- So, 21/56 + 30/10 = 27/8
In mixed form: 33/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56+30/10 21/56+60/10 21/56+30/20 63/56+30/10 21/56+90/10 21/56+30/50 21/56+30/70