Answers

Subtract 72/25 from 25/21

1^st number: 1 4/21, 2^nd number: 2 22/25

25/21 - 72/25 is -887/525.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 25 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 21 × 25 = 525,
   25/21 = 25 × 25/21 × 25 = 625/525
3. Likewise, for the 2nd fraction, since 25 × 21 = 525,
   72/25 = 72 × 21/25 × 21 = 1512/525
4. Subtract the two like fractions:
   625/525 - 1512/525 = 625 - 1512/525 = -887/525

MathStep (Works offline)

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

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

Subtract Fractions Calculator