Answers

Subtract 56/21 from 40/15

1^st number: 2 10/15, 2^nd number: 2 14/21

40/15 - 56/21 is 0/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 21 is 105
   
   Next, find the equivalent fraction of both fractional numbers with denominator 105
2. For the 1st fraction, since 15 × 7 = 105,
   40/15 = 40 × 7/15 × 7 = 280/105
3. Likewise, for the 2nd fraction, since 21 × 5 = 105,
   56/21 = 56 × 5/21 × 5 = 280/105
4. Subtract the two like fractions:
   280/105 - 280/105 = 280 - 280/105 = 0/105
5. The answer is 0

MathStep (Works offline)

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

Related: ⁸⁰/₁₅-⁵⁶/₂₁ ⁴⁰/₃₀-⁵⁶/₂₁ ⁴⁰/₁₅-⁵⁶/₄₂ ⁴⁰/₄₅-⁵⁶/₂₁ ⁴⁰/₁₅-⁵⁶/₆₃ ⁴⁰/₇₅-⁵⁶/₂₁

Subtract Fractions Calculator