Answers

Subtract 40/56 from 15/18

15/18 - 40/56 is 5/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 56 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 18 × 28 = 504,
   15/18 = 15 × 28/18 × 28 = 420/504
3. Likewise, for the 2nd fraction, since 56 × 9 = 504,
   40/56 = 40 × 9/56 × 9 = 360/504
4. Subtract the two like fractions:
   420/504 - 360/504 = 420 - 360/504 = 60/504
5. After reducing the fraction, the answer is 5/42

MathStep (Works offline)

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

Related: ³⁰/₁₈-⁴⁰/₅₆ ¹⁵/₁₈-⁸⁰/₅₆ ¹⁵/₃₆-⁴⁰/₅₆ ⁴⁵/₁₈-⁴⁰/₅₆ ¹⁵/₅₄-⁴⁰/₅₆ ⁷⁵/₁₈-⁴⁰/₅₆ ¹⁵/₉₀-⁴⁰/₅₆

Subtract Fractions Calculator