Add 15/12 and 5/45
1st number: 1 3/12, 2nd number: 5/45
15/12 + 5/45 is 49/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
15/12 = 15 × 15/12 × 15 = 225/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
5/45 = 5 × 4/45 × 4 = 20/180 - Add the two like fractions:
225/180 + 20/180 = 225 + 20/180 = 245/180 - 245/180 simplified gives 49/36
- So, 15/12 + 5/45 = 49/36
In mixed form: 113/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+5/45 15/12+10/45 15/24+5/45 15/12+5/90 45/12+5/45 15/12+15/45 15/36+5/45 75/12+5/45 15/12+25/45 15/60+5/45 15/12+35/45 15/84+5/45