Add 9/12 and 54/15
1st number: 9/12, 2nd number: 3 9/15
9/12 + 54/15 is 87/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
54/15 = 54 × 4/15 × 4 = 216/60 - Add the two like fractions:
45/60 + 216/60 = 45 + 216/60 = 261/60 - 261/60 simplified gives 87/20
- So, 9/12 + 54/15 = 87/20
In mixed form: 47/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+54/15 9/24+54/15 9/12+54/30 27/12+54/15 9/36+54/15 9/12+54/45 45/12+54/15 9/60+54/15 9/12+54/75 63/12+54/15 9/84+54/15