Add 21/14 and 56/45
1st number: 1 7/14, 2nd number: 1 11/45
21/14 + 56/45 is 247/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
21/14 = 21 × 45/14 × 45 = 945/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
56/45 = 56 × 14/45 × 14 = 784/630 - Add the two like fractions:
945/630 + 784/630 = 945 + 784/630 = 1729/630 - 1729/630 simplified gives 247/90
- So, 21/14 + 56/45 = 247/90
In mixed form: 267/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+56/45 21/28+56/45 21/14+56/90 63/14+56/45 21/42+56/45 21/70+56/45 21/98+56/45