Add 12/28 and 4/72
12/28 + 4/72 is 61/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
12/28 = 12 × 18/28 × 18 = 216/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504 - Add the two like fractions:
216/504 + 28/504 = 216 + 28/504 = 244/504 - 244/504 simplified gives 61/126
- So, 12/28 + 4/72 = 61/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/28+4/72 12/28+8/72 12/56+4/72 36/28+4/72 12/28+12/72 12/84+4/72 60/28+4/72 12/28+20/72 84/28+4/72 12/28+28/72