Add 72/60 and 9/28
1st number: 1 12/60, 2nd number: 9/28
72/60 + 9/28 is 213/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
72/60 = 72 × 7/60 × 7 = 504/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
9/28 = 9 × 15/28 × 15 = 135/420 - Add the two like fractions:
504/420 + 135/420 = 504 + 135/420 = 639/420 - 639/420 simplified gives 213/140
- So, 72/60 + 9/28 = 213/140
In mixed form: 173/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/60+18/28 72/60+9/56 72/60+27/28 72/60+9/84 72/60+45/28 72/60+63/28