Answers

Add 81/3 and 90/72

1^st number: 27 0/3, 2^nd number: 1 18/72

81/3 + 90/72 is 113/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 3 and 72 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 3 × 24 = 72,
   81/3 = 81 × 24/3 × 24 = 1944/72
3. Likewise, for the 2nd fraction, since 72 × 1 = 72,
   90/72 = 90 × 1/72 × 1 = 90/72
4. Add the two like fractions:
   1944/72 + 90/72 = 1944 + 90/72 = 2034/72
5. 2034/72 simplified gives 113/4
6. So, 81/3 + 90/72 = 113/4
   In mixed form: 281/4

MathStep (Works offline)

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

Related: ⁸¹/₆+⁹⁰/₇₂ ⁸¹/₉+⁹⁰/₇₂ ⁸¹/₁₅+⁹⁰/₇₂ ⁸¹/₂₁+⁹⁰/₇₂

Add Fractions Calculator