Add 28/25 and 81/42
1st number: 1 3/25, 2nd number: 1 39/42
28/25 + 81/42 is 1067/350.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 25 × 42 = 1050,
28/25 = 28 × 42/25 × 42 = 1176/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
81/42 = 81 × 25/42 × 25 = 2025/1050 - Add the two like fractions:
1176/1050 + 2025/1050 = 1176 + 2025/1050 = 3201/1050 - 3201/1050 simplified gives 1067/350
- So, 28/25 + 81/42 = 1067/350
In mixed form: 317/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/25+81/42 28/50+81/42 28/25+81/84 84/25+81/42 28/75+81/42