Answers

Subtract 25/8 from 7/54

1^st number: 7/54, 2^nd number: 3 1/8

7/54 - 25/8 is -647/216.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 8 is 216
   
   Next, find the equivalent fraction of both fractional numbers with denominator 216
2. For the 1st fraction, since 54 × 4 = 216,
   7/54 = 7 × 4/54 × 4 = 28/216
3. Likewise, for the 2nd fraction, since 8 × 27 = 216,
   25/8 = 25 × 27/8 × 27 = 675/216
4. Subtract the two like fractions:
   28/216 - 675/216 = 28 - 675/216 = -647/216

MathStep (Works offline)

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

Related: ¹⁴/₅₄-²⁵/₈ ⁷/₅₄-⁵⁰/₈ ⁷/₅₄-²⁵/₁₆ ²¹/₅₄-²⁵/₈ ⁷/₅₄-⁷⁵/₈ ⁷/₅₄-²⁵/₂₄ ³⁵/₅₄-²⁵/₈ ⁷/₅₄-²⁵/₄₀ ⁴⁹/₅₄-²⁵/₈ ⁷/₅₄-²⁵/₅₆

Subtract Fractions Calculator