Add 75/72 and 70/84
1st number: 1 3/72, 2nd number: 70/84
75/72 + 70/84 is 15/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
75/72 = 75 × 7/72 × 7 = 525/504 - Likewise, for the 2nd fraction, since 84 × 6 = 504,
70/84 = 70 × 6/84 × 6 = 420/504 - Add the two like fractions:
525/504 + 420/504 = 525 + 420/504 = 945/504 - 945/504 simplified gives 15/8
- So, 75/72 + 70/84 = 15/8
In mixed form: 17/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: