Answers

Add 90/56 and 81/18

1^st number: 1 34/56, 2^nd number: 4 9/18

90/56 + 81/18 is 171/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 18 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 56 × 9 = 504,
   90/56 = 90 × 9/56 × 9 = 810/504
3. Likewise, for the 2nd fraction, since 18 × 28 = 504,
   81/18 = 81 × 28/18 × 28 = 2268/504
4. Add the two like fractions:
   810/504 + 2268/504 = 810 + 2268/504 = 3078/504
5. 3078/504 simplified gives 171/28
6. So, 90/56 + 81/18 = 171/28
   In mixed form: 63/28

MathStep (Works offline)

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

Related: ⁹⁰/₅₆+⁸¹/₃₆ ⁹⁰/₅₆+⁸¹/₅₄ ⁹⁰/₅₆+⁸¹/₉₀

Add Fractions Calculator