Add 28/63 and 60/72
28/63 + 60/72 is 23/18.
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,
60/72 = 60 × 7/72 × 7 = 420/504 - Add the two like fractions:
224/504 + 420/504 = 224 + 420/504 = 644/504 - 644/504 simplified gives 23/18
- So, 28/63 + 60/72 = 23/18
In mixed form: 15/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63+60/72 84/63+60/72