Add 45/12 and 21/60
1st number: 3 9/12, 2nd number: 21/60
45/12 + 21/60 is 41/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Add the two like fractions:
225/60 + 21/60 = 225 + 21/60 = 246/60 - 246/60 simplified gives 41/10
- So, 45/12 + 21/60 = 41/10
In mixed form: 41/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+21/60 45/12+42/60 45/24+21/60 45/12+63/60 45/36+21/60 45/60+21/60 45/84+21/60