Add 27/45 and 21/10
1st number: 27/45, 2nd number: 2 1/10
27/45 + 21/10 is 27/10.
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,
27/45 = 27 × 2/45 × 2 = 54/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Add the two like fractions:
54/90 + 189/90 = 54 + 189/90 = 243/90 - 243/90 simplified gives 27/10
- So, 27/45 + 21/10 = 27/10
In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/45+21/10 27/45+42/10 27/90+21/10 27/45+21/20 81/45+21/10 27/45+63/10 27/45+21/30 27/45+21/50 27/45+21/70