Add 3/7 and 30/72
3/7 + 30/72 is 71/84.
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,
30/72 = 30 × 7/72 × 7 = 210/504 - Add the two like fractions:
216/504 + 210/504 = 216 + 210/504 = 426/504 - 426/504 simplified gives 71/84
- So, 3/7 + 30/72 = 71/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7+30/72 3/7+60/72 3/14+30/72 9/7+30/72 3/7+90/72 3/21+30/72 15/7+30/72 3/35+30/72 21/7+30/72 3/49+30/72