Add 70/30 and 27/28
1st number: 2 10/30, 2nd number: 27/28
70/30 + 27/28 is 277/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
70/30 = 70 × 14/30 × 14 = 980/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
27/28 = 27 × 15/28 × 15 = 405/420 - Add the two like fractions:
980/420 + 405/420 = 980 + 405/420 = 1385/420 - 1385/420 simplified gives 277/84
- So, 70/30 + 27/28 = 277/84
In mixed form: 325/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+54/28 70/60+27/28 70/30+27/56 70/30+81/28 70/90+27/28 70/30+27/84