Add 18/15 and 3/72
1st number: 1 3/15, 2nd number: 3/72
18/15 + 3/72 is 149/120.
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,
3/72 = 3 × 5/72 × 5 = 15/360 - Add the two like fractions:
432/360 + 15/360 = 432 + 15/360 = 447/360 - 447/360 simplified gives 149/120
- So, 18/15 + 3/72 = 149/120
In mixed form: 129/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15+3/72 18/15+6/72 18/30+3/72 54/15+3/72 18/15+9/72 18/45+3/72 90/15+3/72 18/15+15/72 18/75+3/72 18/15+21/72