Add 7/18 and 30/72
7/18 + 30/72 is 29/36.
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,
30/72 = 30 × 1/72 × 1 = 30/72 - Add the two like fractions:
28/72 + 30/72 = 28 + 30/72 = 58/72 - 58/72 simplified gives 29/36
- So, 7/18 + 30/72 = 29/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+30/72 7/18+60/72 7/36+30/72 21/18+30/72 7/18+90/72 7/54+30/72 35/18+30/72 7/90+30/72 49/18+30/72