Add 1/15 and 7/84
1/15 + 7/84 is 3/20.
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,
1/15 = 1 × 28/15 × 28 = 28/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
7/84 = 7 × 5/84 × 5 = 35/420 - Add the two like fractions:
28/420 + 35/420 = 28 + 35/420 = 63/420 - 63/420 simplified gives 3/20
- So, 1/15 + 7/84 = 3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15+7/84 1/15+14/84 1/30+7/84 3/15+7/84 1/15+21/84 1/45+7/84 5/15+7/84 1/15+35/84 1/75+7/84 7/15+7/84 1/15+49/84