Add 21/14 and 56/90
1st number: 1 7/14, 2nd number: 56/90
21/14 + 56/90 is 191/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 90 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 90 × 7 = 630,
56/90 = 56 × 7/90 × 7 = 392/630 - Add the two like fractions:
945/630 + 392/630 = 945 + 392/630 = 1337/630 - 1337/630 simplified gives 191/90
- So, 21/14 + 56/90 = 191/90
In mixed form: 211/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14+56/90 21/28+56/90 63/14+56/90 21/42+56/90 21/70+56/90 21/98+56/90