Add 30/28 and 9/60
1st number: 1 2/28, 2nd number: 9/60
30/28 + 9/60 is 171/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
30/28 = 30 × 15/28 × 15 = 450/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
9/60 = 9 × 7/60 × 7 = 63/420 - Add the two like fractions:
450/420 + 63/420 = 450 + 63/420 = 513/420 - 513/420 simplified gives 171/140
- So, 30/28 + 9/60 = 171/140
In mixed form: 131/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28+9/60 30/28+18/60 30/56+9/60 90/28+9/60 30/28+27/60 30/84+9/60 30/28+45/60 30/28+63/60