Add 7/18 and 18/72
7/18 + 18/72 is 23/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
7/18 = 7 × 4/18 × 4 = 28/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
18/72 = 18 × 1/72 × 1 = 18/72 - Add the two like fractions:
28/72 + 18/72 = 28 + 18/72 = 46/72 - 46/72 simplified gives 23/36
- So, 7/18 + 18/72 = 23/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+18/72 7/18+36/72 7/36+18/72 21/18+18/72 7/18+54/72 7/54+18/72 35/18+18/72 7/18+90/72 7/90+18/72 49/18+18/72