Answers

Subtract 15/54 from 90/64

1^st number: 1 26/64, 2^nd number: 15/54

90/64 - 15/54 is 325/288.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 64 and 54 is 1728
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1728
2. For the 1st fraction, since 64 × 27 = 1728,
   90/64 = 90 × 27/64 × 27 = 2430/1728
3. Likewise, for the 2nd fraction, since 54 × 32 = 1728,
   15/54 = 15 × 32/54 × 32 = 480/1728
4. Subtract the two like fractions:
   2430/1728 - 480/1728 = 2430 - 480/1728 = 1950/1728
5. After reducing the fraction, the answer is 325/288
6. In mixed form: 137/288

MathStep (Works offline)

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

Related: ⁹⁰/₆₄-³⁰/₅₄ ⁹⁰/₆₄-⁴⁵/₅₄ ⁹⁰/₆₄-⁷⁵/₅₄

Subtract Fractions Calculator