Answers

Add 75/40 and 21/63

1^st number: 1 35/40, 2^nd number: 21/63

75/40 + 21/63 is 53/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 63 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 40 × 63 = 2520,
   75/40 = 75 × 63/40 × 63 = 4725/2520
3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
   21/63 = 21 × 40/63 × 40 = 840/2520
4. Add the two like fractions:
   4725/2520 + 840/2520 = 4725 + 840/2520 = 5565/2520
5. 5565/2520 simplified gives 53/24
6. So, 75/40 + 21/63 = 53/24
   In mixed form: 25/24

MathStep (Works offline)

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

Related: ⁷⁵/₄₀+⁴²/₆₃ ⁷⁵/₈₀+²¹/₆₃

Add Fractions Calculator