Add 12/84 and 14/15
12/84 + 14/15 is 113/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
12/84 = 12 × 5/84 × 5 = 60/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
14/15 = 14 × 28/15 × 28 = 392/420 - Add the two like fractions:
60/420 + 392/420 = 60 + 392/420 = 452/420 - 452/420 simplified gives 113/105
- So, 12/84 + 14/15 = 113/105
In mixed form: 18/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/84+14/15 12/84+28/15 12/84+14/30 36/84+14/15 12/84+42/15 12/84+14/45 60/84+14/15 12/84+70/15 12/84+14/75 12/84+98/15