Add 72/28 and 9/30
1st number: 2 16/28, 2nd number: 9/30
72/28 + 9/30 is 201/70.
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,
72/28 = 72 × 15/28 × 15 = 1080/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
9/30 = 9 × 14/30 × 14 = 126/420 - Add the two like fractions:
1080/420 + 126/420 = 1080 + 126/420 = 1206/420 - 1206/420 simplified gives 201/70
- So, 72/28 + 9/30 = 201/70
In mixed form: 261/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/28+18/30 72/56+9/30 72/28+9/60 72/28+27/30 72/84+9/30 72/28+9/90 72/28+45/30 72/28+63/30