Answers

Subtract 45/14 from 27/20

1^st number: 1 7/20, 2^nd number: 3 3/14

27/20 - 45/14 is -261/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 14 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   27/20 = 27 × 7/20 × 7 = 189/140
3. Likewise, for the 2nd fraction, since 14 × 10 = 140,
   45/14 = 45 × 10/14 × 10 = 450/140
4. Subtract the two like fractions:
   189/140 - 450/140 = 189 - 450/140 = -261/140

MathStep (Works offline)

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

Related: ⁵⁴/₂₀-⁴⁵/₁₄ ²⁷/₂₀-⁹⁰/₁₄ ²⁷/₄₀-⁴⁵/₁₄ ²⁷/₂₀-⁴⁵/₂₈ ⁸¹/₂₀-⁴⁵/₁₄ ²⁷/₆₀-⁴⁵/₁₄ ²⁷/₂₀-⁴⁵/₄₂ ²⁷/₂₀-⁴⁵/₇₀ ²⁷/₂₀-⁴⁵/₉₈

Subtract Fractions Calculator