Answers

Subtract 30/6 from 18/90

1^st number: 18/90, 2^nd number: 5 0/6

18/90 - 30/6 is -24/5.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 6 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   18/90 = 18 × 1/90 × 1 = 18/90
3. Likewise, for the 2nd fraction, since 6 × 15 = 90,
   30/6 = 30 × 15/6 × 15 = 450/90
4. Subtract the two like fractions:
   18/90 - 450/90 = 18 - 450/90 = -432/90
5. After reducing the fraction, the answer is -24/5

MathStep (Works offline)

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

Related: ³⁶/₉₀-³⁰/₆ ¹⁸/₉₀-⁶⁰/₆ ¹⁸/₉₀-³⁰/₁₂ ⁵⁴/₉₀-³⁰/₆ ¹⁸/₉₀-⁹⁰/₆ ¹⁸/₉₀-³⁰/₁₈ ¹⁸/₉₀-³⁰/₄₂

Subtract Fractions Calculator