Add 30/72 and 3/18
30/72 + 3/18 is 7/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
30/72 = 30 × 1/72 × 1 = 30/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
3/18 = 3 × 4/18 × 4 = 12/72 - Add the two like fractions:
30/72 + 12/72 = 30 + 12/72 = 42/72 - 42/72 simplified gives 7/12
- So, 30/72 + 3/18 = 7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/72+3/18 30/72+6/18 30/72+3/36 90/72+3/18 30/72+9/18 30/72+3/54 30/72+15/18 30/72+3/90 30/72+21/18