Add 45/12 and 3/5
1st number: 3 9/12, 2nd number: 3/5
45/12 + 3/5 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 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 5 × 12 = 60,
3/5 = 3 × 12/5 × 12 = 36/60 - Add the two like fractions:
225/60 + 36/60 = 225 + 36/60 = 261/60 - 261/60 simplified gives 87/20
- So, 45/12 + 3/5 = 87/20
In mixed form: 47/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12+3/5 45/12+6/5 45/24+3/5 45/12+3/10 45/12+9/5 45/36+3/5 45/12+3/15 45/12+15/5 45/60+3/5 45/12+3/25 45/12+21/5 45/84+3/5 45/12+3/35