Answers

Subtract 90/5 from 54/4

1^st number: 13 2/4, 2^nd number: 18 0/5

54/4 - 90/5 is -9/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 5 is 20
   
   Next, find the equivalent fraction of both fractional numbers with denominator 20
2. For the 1st fraction, since 4 × 5 = 20,
   54/4 = 54 × 5/4 × 5 = 270/20
3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
   90/5 = 90 × 4/5 × 4 = 360/20
4. Subtract the two like fractions:
   270/20 - 360/20 = 270 - 360/20 = -90/20
5. After reducing the fraction, the answer is -9/2

MathStep (Works offline)

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

Related: ⁵⁴/₈-⁹⁰/₅ ⁵⁴/₄-⁹⁰/₁₀ ⁵⁴/₁₂-⁹⁰/₅ ⁵⁴/₄-⁹⁰/₁₅ ⁵⁴/₂₀-⁹⁰/₅ ⁵⁴/₄-⁹⁰/₂₅ ⁵⁴/₂₈-⁹⁰/₅ ⁵⁴/₄-⁹⁰/₃₅

Subtract Fractions Calculator