Add 81/20 and 50/56
1st number: 4 1/20, 2nd number: 50/56
81/20 + 50/56 is 173/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
81/20 = 81 × 14/20 × 14 = 1134/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
50/56 = 50 × 5/56 × 5 = 250/280 - Add the two like fractions:
1134/280 + 250/280 = 1134 + 250/280 = 1384/280 - 1384/280 simplified gives 173/35
- So, 81/20 + 50/56 = 173/35
In mixed form: 433/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/40+50/56 81/60+50/56