Add 15/63 and 63/84
15/63 + 63/84 is 83/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
15/63 = 15 × 4/63 × 4 = 60/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
63/84 = 63 × 3/84 × 3 = 189/252 - Add the two like fractions:
60/252 + 189/252 = 60 + 189/252 = 249/252 - 249/252 simplified gives 83/84
- So, 15/63 + 63/84 = 83/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/63+63/84 45/63+63/84 75/63+63/84