Answers

Add 81/63 and 75/30

1^st number: 1 18/63, 2^nd number: 2 15/30

81/63 + 75/30 is 53/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 30 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   81/63 = 81 × 10/63 × 10 = 810/630
3. Likewise, for the 2nd fraction, since 30 × 21 = 630,
   75/30 = 75 × 21/30 × 21 = 1575/630
4. Add the two like fractions:
   810/630 + 1575/630 = 810 + 1575/630 = 2385/630
5. 2385/630 simplified gives 53/14
6. So, 81/63 + 75/30 = 53/14
   In mixed form: 311/14

MathStep (Works offline)

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

Related: ⁸¹/₆₃+⁷⁵/₆₀ ⁸¹/₆₃+⁷⁵/₉₀

Add Fractions Calculator