Answers

Add 81/63 and 18/36

1^st number: 1 18/63, 2^nd number: 18/36

81/63 + 18/36 is 25/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 36 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 63 × 4 = 252,
   81/63 = 81 × 4/63 × 4 = 324/252
3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
   18/36 = 18 × 7/36 × 7 = 126/252
4. Add the two like fractions:
   324/252 + 126/252 = 324 + 126/252 = 450/252
5. 450/252 simplified gives 25/14
6. So, 81/63 + 18/36 = 25/14
   In mixed form: 111/14

MathStep (Works offline)

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

Related: ⁸¹/₆₃+¹⁸/₇₂ ⁸¹/₆₃+⁵⁴/₃₆ ⁸¹/₆₃+⁹⁰/₃₆

Add Fractions Calculator