Answers

Add 36/54 and 25/21

1^st number: 36/54, 2^nd number: 1 4/21

36/54 + 25/21 is 13/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 21 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 54 × 7 = 378,
   36/54 = 36 × 7/54 × 7 = 252/378
3. Likewise, for the 2nd fraction, since 21 × 18 = 378,
   25/21 = 25 × 18/21 × 18 = 450/378
4. Add the two like fractions:
   252/378 + 450/378 = 252 + 450/378 = 702/378
5. 702/378 simplified gives 13/7
6. So, 36/54 + 25/21 = 13/7
   In mixed form: 16/7

MathStep (Works offline)

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

Related: ⁷²/₅₄+²⁵/₂₁ ³⁶/₅₄+⁵⁰/₂₁ ³⁶/₅₄+²⁵/₄₂ ³⁶/₅₄+⁷⁵/₂₁ ³⁶/₅₄+²⁵/₆₃

Add Fractions Calculator