Add 5/45 and 21/10
1st number: 5/45, 2nd number: 2 1/10
5/45 + 21/10 is 199/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
5/45 = 5 × 2/45 × 2 = 10/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Add the two like fractions:
10/90 + 189/90 = 10 + 189/90 = 199/90 - So, 5/45 + 21/10 = 199/90
In mixed form: 219/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/45+21/10 5/45+42/10 5/90+21/10 5/45+21/20 15/45+21/10 5/45+63/10 5/45+21/30 25/45+21/10 5/45+21/50 35/45+21/10 5/45+21/70