Add 50/20 and 81/28
1st number: 2 10/20, 2nd number: 2 25/28
50/20 + 81/28 is 151/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
50/20 = 50 × 7/20 × 7 = 350/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
81/28 = 81 × 5/28 × 5 = 405/140 - Add the two like fractions:
350/140 + 405/140 = 350 + 405/140 = 755/140 - 755/140 simplified gives 151/28
- So, 50/20 + 81/28 = 151/28
In mixed form: 511/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40+81/28 50/20+81/56 50/60+81/28 50/20+81/84