Add 1/28 and 30/72
1/28 + 30/72 is 19/42.
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,
1/28 = 1 × 18/28 × 18 = 18/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
30/72 = 30 × 7/72 × 7 = 210/504 - Add the two like fractions:
18/504 + 210/504 = 18 + 210/504 = 228/504 - 228/504 simplified gives 19/42
- So, 1/28 + 30/72 = 19/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28+30/72 1/28+60/72 1/56+30/72 3/28+30/72 1/28+90/72 1/84+30/72 5/28+30/72 7/28+30/72