Add 30/56 and 18/72
30/56 + 18/72 is 11/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
30/56 = 30 × 9/56 × 9 = 270/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504 - Add the two like fractions:
270/504 + 126/504 = 270 + 126/504 = 396/504 - 396/504 simplified gives 11/14
- So, 30/56 + 18/72 = 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/56+18/72 30/56+36/72 90/56+18/72 30/56+54/72 30/56+90/72