Add 15/54 and 12/9
1st number: 15/54, 2nd number: 1 3/9
15/54 + 12/9 is 29/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 9 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
15/54 = 15 × 1/54 × 1 = 15/54 - Likewise, for the 2nd fraction, since 9 × 6 = 54,
12/9 = 12 × 6/9 × 6 = 72/54 - Add the two like fractions:
15/54 + 72/54 = 15 + 72/54 = 87/54 - 87/54 simplified gives 29/18
- So, 15/54 + 12/9 = 29/18
In mixed form: 111/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/54+12/9 15/54+24/9 15/54+12/18 45/54+12/9 15/54+36/9 15/54+12/27 75/54+12/9 15/54+60/9 15/54+12/45 15/54+84/9 15/54+12/63