Answers

Add 25/21 and 54/42

1^st number: 1 4/21, 2^nd number: 1 12/42

25/21 + 54/42 is 52/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 42 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 21 × 2 = 42,
   25/21 = 25 × 2/21 × 2 = 50/42
3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
   54/42 = 54 × 1/42 × 1 = 54/42
4. Add the two like fractions:
   50/42 + 54/42 = 50 + 54/42 = 104/42
5. 104/42 simplified gives 52/21
6. So, 25/21 + 54/42 = 52/21
   In mixed form: 210/21

MathStep (Works offline)

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

Related: ⁵⁰/₂₁+⁵⁴/₄₂ ²⁵/₄₂+⁵⁴/₄₂ ²⁵/₂₁+⁵⁴/₈₄ ⁷⁵/₂₁+⁵⁴/₄₂ ²⁵/₆₃+⁵⁴/₄₂

Add Fractions Calculator