Add 90/84 and 5/72
1st number: 1 6/84, 2nd number: 5/72
90/84 + 5/72 is 575/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
90/84 = 90 × 6/84 × 6 = 540/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
5/72 = 5 × 7/72 × 7 = 35/504 - Add the two like fractions:
540/504 + 35/504 = 540 + 35/504 = 575/504 - So, 90/84 + 5/72 = 575/504
In mixed form: 171/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84+10/72 90/84+15/72 90/84+25/72 90/84+35/72