Add 70/28 and 75/72
1st number: 2 14/28, 2nd number: 1 3/72
70/28 + 75/72 is 85/24.
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,
70/28 = 70 × 18/28 × 18 = 1260/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
75/72 = 75 × 7/72 × 7 = 525/504 - Add the two like fractions:
1260/504 + 525/504 = 1260 + 525/504 = 1785/504 - 1785/504 simplified gives 85/24
- So, 70/28 + 75/72 = 85/24
In mixed form: 313/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/56+75/72 70/84+75/72