Add 21/4 and 27/60
1st number: 5 1/4, 2nd number: 27/60
21/4 + 27/60 is 57/10.
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,
27/60 = 27 × 1/60 × 1 = 27/60 - Add the two like fractions:
315/60 + 27/60 = 315 + 27/60 = 342/60 - 342/60 simplified gives 57/10
- So, 21/4 + 27/60 = 57/10
In mixed form: 57/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4+27/60 21/4+54/60 21/8+27/60 63/4+27/60 21/4+81/60 21/12+27/60 21/20+27/60 21/28+27/60