Add 28/63 and 15/72
28/63 + 15/72 is 47/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
28/63 = 28 × 8/63 × 8 = 224/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
15/72 = 15 × 7/72 × 7 = 105/504 - Add the two like fractions:
224/504 + 105/504 = 224 + 105/504 = 329/504 - 329/504 simplified gives 47/72
- So, 28/63 + 15/72 = 47/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63+15/72 28/63+30/72 84/63+15/72 28/63+45/72 28/63+75/72