Add 15/12 and 54/7
1st number: 1 3/12, 2nd number: 7 5/7
15/12 + 54/7 is 251/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 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 7 × 12 = 84,
54/7 = 54 × 12/7 × 12 = 648/84 - Add the two like fractions:
105/84 + 648/84 = 105 + 648/84 = 753/84 - 753/84 simplified gives 251/28
- So, 15/12 + 54/7 = 251/28
In mixed form: 827/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/12+54/7 15/24+54/7 15/12+54/14 45/12+54/7 15/36+54/7 15/12+54/21 75/12+54/7 15/60+54/7 15/12+54/35 15/84+54/7 15/12+54/49