Add 16/28 and 81/30
1st number: 16/28, 2nd number: 2 21/30
16/28 + 81/30 is 229/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
16/28 = 16 × 15/28 × 15 = 240/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
81/30 = 81 × 14/30 × 14 = 1134/420 - Add the two like fractions:
240/420 + 1134/420 = 240 + 1134/420 = 1374/420 - 1374/420 simplified gives 229/70
- So, 16/28 + 81/30 = 229/70
In mixed form: 319/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/28+81/30 16/56+81/30 16/28+81/60 48/28+81/30 16/84+81/30 16/28+81/90 80/28+81/30