Answers

Add 72/9 and 49/80

1^st number: 8 0/9, 2^nd number: 49/80

72/9 + 49/80 is 689/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 9 × 80 = 720,
   72/9 = 72 × 80/9 × 80 = 5760/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   49/80 = 49 × 9/80 × 9 = 441/720
4. Add the two like fractions:
   5760/720 + 441/720 = 5760 + 441/720 = 6201/720
5. 6201/720 simplified gives 689/80
6. So, 72/9 + 49/80 = 689/80
   In mixed form: 849/80

MathStep (Works offline)

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

Related: ⁷²/₉+⁹⁸/₈₀ ⁷²/₁₈+⁴⁹/₈₀ ⁷²/₂₇+⁴⁹/₈₀ ⁷²/₄₅+⁴⁹/₈₀ ⁷²/₆₃+⁴⁹/₈₀

Add Fractions Calculator