Add 15/18 and 12/84
15/18 + 12/84 is 41/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
15/18 = 15 × 14/18 × 14 = 210/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
12/84 = 12 × 3/84 × 3 = 36/252 - Add the two like fractions:
210/252 + 36/252 = 210 + 36/252 = 246/252 - 246/252 simplified gives 41/42
- So, 15/18 + 12/84 = 41/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+12/84 15/18+24/84 15/36+12/84 45/18+12/84 15/18+36/84 15/54+12/84 75/18+12/84 15/18+60/84 15/90+12/84