Add 15/84 and 12/36
15/84 + 12/36 is 43/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
15/84 = 15 × 3/84 × 3 = 45/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
12/36 = 12 × 7/36 × 7 = 84/252 - Add the two like fractions:
45/252 + 84/252 = 45 + 84/252 = 129/252 - 129/252 simplified gives 43/84
- So, 15/84 + 12/36 = 43/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/84+12/36 15/84+24/36 15/84+12/72 45/84+12/36 75/84+12/36 15/84+60/36 15/84+84/36