Add 12/15 and 12/84
12/15 + 12/84 is 33/35.
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,
12/84 = 12 × 5/84 × 5 = 60/420 - Add the two like fractions:
336/420 + 60/420 = 336 + 60/420 = 396/420 - 396/420 simplified gives 33/35
- So, 12/15 + 12/84 = 33/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+12/84 12/15+24/84 12/30+12/84 36/15+12/84 12/15+36/84 12/45+12/84 60/15+12/84 12/15+60/84 12/75+12/84 84/15+12/84