Add 81/25 and 28/45
1st number: 3 6/25, 2nd number: 28/45
81/25 + 28/45 is 869/225.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
81/25 = 81 × 9/25 × 9 = 729/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
28/45 = 28 × 5/45 × 5 = 140/225 - Add the two like fractions:
729/225 + 140/225 = 729 + 140/225 = 869/225 - So, 81/25 + 28/45 = 869/225
In mixed form: 3194/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/25+56/45 81/50+28/45 81/25+28/90 81/25+84/45 81/75+28/45