Answers

Subtract 90/14 from 9/12

1^st number: 9/12, 2^nd number: 6 6/14

9/12 - 90/14 is -159/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 14 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   9/12 = 9 × 7/12 × 7 = 63/84
3. Likewise, for the 2nd fraction, since 14 × 6 = 84,
   90/14 = 90 × 6/14 × 6 = 540/84
4. Subtract the two like fractions:
   63/84 - 540/84 = 63 - 540/84 = -477/84
5. After reducing the fraction, the answer is -159/28

MathStep (Works offline)

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

Related: ¹⁸/₁₂-⁹⁰/₁₄ ⁹/₂₄-⁹⁰/₁₄ ⁹/₁₂-⁹⁰/₂₈ ²⁷/₁₂-⁹⁰/₁₄ ⁹/₃₆-⁹⁰/₁₄ ⁹/₁₂-⁹⁰/₄₂ ⁴⁵/₁₂-⁹⁰/₁₄ ⁹/₆₀-⁹⁰/₁₄ ⁹/₁₂-⁹⁰/₇₀ ⁶³/₁₂-⁹⁰/₁₄ ⁹/₈₄-⁹⁰/₁₄ ⁹/₁₂-⁹⁰/₉₈

Subtract Fractions Calculator