Add 3/15 and 8/84
3/15 + 8/84 is 31/105.
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,
3/15 = 3 × 28/15 × 28 = 84/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
8/84 = 8 × 5/84 × 5 = 40/420 - Add the two like fractions:
84/420 + 40/420 = 84 + 40/420 = 124/420 - 124/420 simplified gives 31/105
- So, 3/15 + 8/84 = 31/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15+8/84 3/15+16/84 3/30+8/84 9/15+8/84 3/15+24/84 3/45+8/84 3/15+40/84 3/75+8/84 21/15+8/84 3/15+56/84