Add 72/45 and 3/12
1st number: 1 27/45, 2nd number: 3/12
72/45 + 3/12 is 37/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
72/45 = 72 × 4/45 × 4 = 288/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
3/12 = 3 × 15/12 × 15 = 45/180 - Add the two like fractions:
288/180 + 45/180 = 288 + 45/180 = 333/180 - 333/180 simplified gives 37/20
- So, 72/45 + 3/12 = 37/20
In mixed form: 117/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/45+6/12 72/90+3/12 72/45+3/24 72/45+9/12 72/45+3/36 72/45+15/12 72/45+3/60 72/45+21/12 72/45+3/84