Answers

Subtract 9/7 from 4/12

1^st number: 4/12, 2^nd number: 1 2/7

4/12 - 9/7 is -20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 7 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   4/12 = 4 × 7/12 × 7 = 28/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   9/7 = 9 × 12/7 × 12 = 108/84
4. Subtract the two like fractions:
   28/84 - 108/84 = 28 - 108/84 = -80/84
5. After reducing the fraction, the answer is -20/21

MathStep (Works offline)

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

Related: ⁸/₁₂-⁹/₇ ⁴/₁₂-¹⁸/₇ ⁴/₂₄-⁹/₇ ⁴/₁₂-⁹/₁₄ ⁴/₁₂-²⁷/₇ ⁴/₃₆-⁹/₇ ⁴/₁₂-⁹/₂₁ ²⁰/₁₂-⁹/₇ ⁴/₁₂-⁴⁵/₇ ⁴/₆₀-⁹/₇ ⁴/₁₂-⁹/₃₅ ²⁸/₁₂-⁹/₇ ⁴/₁₂-⁶³/₇ ⁴/₈₄-⁹/₇ ⁴/₁₂-⁹/₄₉

Subtract Fractions Calculator