Add 12/15 and 5/84
12/15 + 5/84 is 361/420.
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,
12/15 = 12 × 28/15 × 28 = 336/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420 - Add the two like fractions:
336/420 + 25/420 = 336 + 25/420 = 361/420 - So, 12/15 + 5/84 = 361/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+5/84 12/15+10/84 12/30+5/84 36/15+5/84 12/15+15/84 12/45+5/84 60/15+5/84 12/15+25/84 12/75+5/84 84/15+5/84 12/15+35/84