Add 72/5 and 45/12
1st number: 14 2/5, 2nd number: 3 9/12
72/5 + 45/12 is 363/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
72/5 = 72 × 12/5 × 12 = 864/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Add the two like fractions:
864/60 + 225/60 = 864 + 225/60 = 1089/60 - 1089/60 simplified gives 363/20
- So, 72/5 + 45/12 = 363/20
In mixed form: 183/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/5+90/12 72/10+45/12 72/5+45/24 72/15+45/12 72/5+45/36 72/25+45/12 72/5+45/60 72/35+45/12 72/5+45/84