Add 21/4 and 9/60
1st number: 5 1/4, 2nd number: 9/60
21/4 + 9/60 is 27/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
21/4 = 21 × 15/4 × 15 = 315/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
9/60 = 9 × 1/60 × 1 = 9/60 - Add the two like fractions:
315/60 + 9/60 = 315 + 9/60 = 324/60 - 324/60 simplified gives 27/5
- So, 21/4 + 9/60 = 27/5
In mixed form: 52/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+9/60 21/4+18/60 21/8+9/60 63/4+9/60 21/4+27/60 21/12+9/60 21/4+45/60 21/20+9/60 21/4+63/60 21/28+9/60