Answers

Subtract 7/54 from 90/40

1^st number: 2 10/40, 2^nd number: 7/54

90/40 - 7/54 is 229/108.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 54 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 40 × 27 = 1080,
   90/40 = 90 × 27/40 × 27 = 2430/1080
3. Likewise, for the 2nd fraction, since 54 × 20 = 1080,
   7/54 = 7 × 20/54 × 20 = 140/1080
4. Subtract the two like fractions:
   2430/1080 - 140/1080 = 2430 - 140/1080 = 2290/1080
5. After reducing the fraction, the answer is 229/108
6. In mixed form: 213/108

MathStep (Works offline)

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

Related: ⁹⁰/₄₀-¹⁴/₅₄ ⁹⁰/₈₀-⁷/₅₄ ⁹⁰/₄₀-²¹/₅₄ ⁹⁰/₄₀-³⁵/₅₄ ⁹⁰/₄₀-⁴⁹/₅₄

Subtract Fractions Calculator