Add 3/7 and 18/72
3/7 + 18/72 is 19/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
3/7 = 3 × 72/7 × 72 = 216/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504 - Add the two like fractions:
216/504 + 126/504 = 216 + 126/504 = 342/504 - 342/504 simplified gives 19/28
- So, 3/7 + 18/72 = 19/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+18/72 3/7+36/72 3/14+18/72 9/7+18/72 3/7+54/72 3/21+18/72 15/7+18/72 3/7+90/72 3/35+18/72 21/7+18/72 3/49+18/72