Answers

Add 90/36 and 21/56

1^st number: 2 18/36, 2^nd number: 21/56

90/36 + 21/56 is 23/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 56 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 36 × 14 = 504,
   90/36 = 90 × 14/36 × 14 = 1260/504
3. Likewise, for the 2nd fraction, since 56 × 9 = 504,
   21/56 = 21 × 9/56 × 9 = 189/504
4. Add the two like fractions:
   1260/504 + 189/504 = 1260 + 189/504 = 1449/504
5. 1449/504 simplified gives 23/8
6. So, 90/36 + 21/56 = 23/8
   In mixed form: 27/8

MathStep (Works offline)

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

Related: ⁹⁰/₃₆+⁴²/₅₆ ⁹⁰/₇₂+²¹/₅₆ ⁹⁰/₃₆+⁶³/₅₆

Add Fractions Calculator