Add 18/30 and 63/28
1st number: 18/30, 2nd number: 2 7/28
18/30 + 63/28 is 57/20.
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,
18/30 = 18 × 14/30 × 14 = 252/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
63/28 = 63 × 15/28 × 15 = 945/420 - Add the two like fractions:
252/420 + 945/420 = 252 + 945/420 = 1197/420 - 1197/420 simplified gives 57/20
- So, 18/30 + 63/28 = 57/20
In mixed form: 217/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30+63/28 18/60+63/28 18/30+63/56 54/30+63/28 18/90+63/28 18/30+63/84 90/30+63/28