Add 15/45 and 7/12
15/45 + 7/12 is 11/12.
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,
15/45 = 15 × 4/45 × 4 = 60/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
7/12 = 7 × 15/12 × 15 = 105/180 - Add the two like fractions:
60/180 + 105/180 = 60 + 105/180 = 165/180 - 165/180 simplified gives 11/12
- So, 15/45 + 7/12 = 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/45+7/12 15/45+14/12 15/90+7/12 15/45+7/24 15/45+21/12 15/45+7/36 75/45+7/12 15/45+35/12 15/45+7/60 15/45+49/12 15/45+7/84