Add 15/75 and 18/72
15/75 + 18/72 is 9/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 75 × 24 = 1800,
15/75 = 15 × 24/75 × 24 = 360/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
18/72 = 18 × 25/72 × 25 = 450/1800 - Add the two like fractions:
360/1800 + 450/1800 = 360 + 450/1800 = 810/1800 - 810/1800 simplified gives 9/20
- So, 15/75 + 18/72 = 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/75+18/72 15/75+36/72 45/75+18/72 15/75+54/72 15/75+90/72