Add 14/84 and 54/15
1st number: 14/84, 2nd number: 3 9/15
14/84 + 54/15 is 113/30.
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,
14/84 = 14 × 5/84 × 5 = 70/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
54/15 = 54 × 28/15 × 28 = 1512/420 - Add the two like fractions:
70/420 + 1512/420 = 70 + 1512/420 = 1582/420 - 1582/420 simplified gives 113/30
- So, 14/84 + 54/15 = 113/30
In mixed form: 323/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/84+54/15 14/84+54/30 42/84+54/15 14/84+54/45 70/84+54/15 14/84+54/75 98/84+54/15