Add 7/45 and 15/12
1st number: 7/45, 2nd number: 1 3/12
7/45 + 15/12 is 253/180.
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,
7/45 = 7 × 4/45 × 4 = 28/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
15/12 = 15 × 15/12 × 15 = 225/180 - Add the two like fractions:
28/180 + 225/180 = 28 + 225/180 = 253/180 - So, 7/45 + 15/12 = 253/180
In mixed form: 173/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45+15/12 7/45+30/12 7/90+15/12 7/45+15/24 21/45+15/12 7/45+45/12 7/45+15/36 35/45+15/12 7/45+75/12 7/45+15/60 49/45+15/12 7/45+15/84