Answers

Add 84/72 and 45/84

1^st number: 1 12/72, 2^nd number: 45/84

84/72 + 45/84 is 143/84.

Steps for adding fractions

1. 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
2. For the 1st fraction, since 72 × 7 = 504,
   84/72 = 84 × 7/72 × 7 = 588/504
3. Likewise, for the 2nd fraction, since 84 × 6 = 504,
   45/84 = 45 × 6/84 × 6 = 270/504
4. Add the two like fractions:
   588/504 + 270/504 = 588 + 270/504 = 858/504
5. 858/504 simplified gives 143/84
6. So, 84/72 + 45/84 = 143/84
   In mixed form: 159/84

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁸⁴/₇₂+⁹⁰/₈₄

Add Fractions Calculator