Answers

Subtract 25/54 from 36/21

1^st number: 1 15/21, 2^nd number: 25/54

36/21 - 25/54 is 473/378.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 21 × 18 = 378,
   36/21 = 36 × 18/21 × 18 = 648/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   25/54 = 25 × 7/54 × 7 = 175/378
4. Subtract the two like fractions:
   648/378 - 175/378 = 648 - 175/378 = 473/378
5. In mixed form: 195/378

MathStep (Works offline)

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

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

Subtract Fractions Calculator