Add 3/15 and 63/72
3/15 + 63/72 is 43/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
3/15 = 3 × 24/15 × 24 = 72/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
63/72 = 63 × 5/72 × 5 = 315/360 - Add the two like fractions:
72/360 + 315/360 = 72 + 315/360 = 387/360 - 387/360 simplified gives 43/40
- So, 3/15 + 63/72 = 43/40
In mixed form: 13/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15+63/72 3/30+63/72 9/15+63/72 3/45+63/72 3/75+63/72 21/15+63/72