Add 28/42 and 75/72
1st number: 28/42, 2nd number: 1 3/72
28/42 + 75/72 is 41/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
28/42 = 28 × 12/42 × 12 = 336/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
75/72 = 75 × 7/72 × 7 = 525/504 - Add the two like fractions:
336/504 + 525/504 = 336 + 525/504 = 861/504 - 861/504 simplified gives 41/24
- So, 28/42 + 75/72 = 41/24
In mixed form: 117/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+75/72 28/84+75/72 84/42+75/72