Answers

Subtract 40/9 from 12/8

1^st number: 1 4/8, 2^nd number: 4 4/9

12/8 - 40/9 is -53/18.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 9 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 8 × 9 = 72,
   12/8 = 12 × 9/8 × 9 = 108/72
3. Likewise, for the 2nd fraction, since 9 × 8 = 72,
   40/9 = 40 × 8/9 × 8 = 320/72
4. Subtract the two like fractions:
   108/72 - 320/72 = 108 - 320/72 = -212/72
5. After reducing the fraction, the answer is -53/18

MathStep (Works offline)

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

Related: ²⁴/₈-⁴⁰/₉ ¹²/₈-⁸⁰/₉ ¹²/₁₆-⁴⁰/₉ ¹²/₈-⁴⁰/₁₈ ³⁶/₈-⁴⁰/₉ ¹²/₂₄-⁴⁰/₉ ¹²/₈-⁴⁰/₂₇ ⁶⁰/₈-⁴⁰/₉ ¹²/₄₀-⁴⁰/₉ ¹²/₈-⁴⁰/₄₅ ⁸⁴/₈-⁴⁰/₉ ¹²/₅₆-⁴⁰/₉ ¹²/₈-⁴⁰/₆₃

Subtract Fractions Calculator