Add 15/12 and 54/84
1st number: 1 3/12, 2nd number: 54/84
15/12 + 54/84 is 53/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
54/84 = 54 × 1/84 × 1 = 54/84 - Add the two like fractions:
105/84 + 54/84 = 105 + 54/84 = 159/84 - 159/84 simplified gives 53/28
- So, 15/12 + 54/84 = 53/28
In mixed form: 125/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+54/84 15/24+54/84 45/12+54/84 15/36+54/84 75/12+54/84 15/60+54/84 15/84+54/84