Add 15/8 and 84/12
1st number: 1 7/8, 2nd number: 7 0/12
15/8 + 84/12 is 71/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
15/8 = 15 × 3/8 × 3 = 45/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
84/12 = 84 × 2/12 × 2 = 168/24 - Add the two like fractions:
45/24 + 168/24 = 45 + 168/24 = 213/24 - 213/24 simplified gives 71/8
- So, 15/8 + 84/12 = 71/8
In mixed form: 87/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/8+84/12 15/16+84/12 15/8+84/24 45/8+84/12 15/24+84/12 15/8+84/36 75/8+84/12 15/40+84/12 15/8+84/60 15/56+84/12