Add 5/15 and 8/84
5/15 + 8/84 is 3/7.
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,
5/15 = 5 × 28/15 × 28 = 140/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
8/84 = 8 × 5/84 × 5 = 40/420 - Add the two like fractions:
140/420 + 40/420 = 140 + 40/420 = 180/420 - 180/420 simplified gives 3/7
- So, 5/15 + 8/84 = 3/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15+8/84 5/15+16/84 5/30+8/84 5/15+24/84 5/45+8/84 25/15+8/84 5/15+40/84 5/75+8/84 35/15+8/84 5/15+56/84