Add 18/15 and 27/72
1st number: 1 3/15, 2nd number: 27/72
18/15 + 27/72 is 63/40.
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,
18/15 = 18 × 24/15 × 24 = 432/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
27/72 = 27 × 5/72 × 5 = 135/360 - Add the two like fractions:
432/360 + 135/360 = 432 + 135/360 = 567/360 - 567/360 simplified gives 63/40
- So, 18/15 + 27/72 = 63/40
In mixed form: 123/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+27/72 18/15+54/72 18/30+27/72 54/15+27/72 18/15+81/72 18/45+27/72 90/15+27/72 18/75+27/72