Add 15/50 and 81/42
1st number: 15/50, 2nd number: 1 39/42
15/50 + 81/42 is 78/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
15/50 = 15 × 21/50 × 21 = 315/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
81/42 = 81 × 25/42 × 25 = 2025/1050 - Add the two like fractions:
315/1050 + 2025/1050 = 315 + 2025/1050 = 2340/1050 - 2340/1050 simplified gives 78/35
- So, 15/50 + 81/42 = 78/35
In mixed form: 28/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/50+81/42 15/50+81/84 45/50+81/42 75/50+81/42