Add 14/15 and 5/84
14/15 + 5/84 is 139/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
14/15 = 14 × 28/15 × 28 = 392/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420 - Add the two like fractions:
392/420 + 25/420 = 392 + 25/420 = 417/420 - 417/420 simplified gives 139/140
- So, 14/15 + 5/84 = 139/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/15+5/84 14/15+10/84 14/30+5/84 42/15+5/84 14/15+15/84 14/45+5/84 70/15+5/84 14/15+25/84 14/75+5/84 98/15+5/84 14/15+35/84