Answers

Subtract 45/30 from 54/56

1^st number: 54/56, 2^nd number: 1 15/30

54/56 - 45/30 is -15/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 30 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 56 × 15 = 840,
   54/56 = 54 × 15/56 × 15 = 810/840
3. Likewise, for the 2nd fraction, since 30 × 28 = 840,
   45/30 = 45 × 28/30 × 28 = 1260/840
4. Subtract the two like fractions:
   810/840 - 1260/840 = 810 - 1260/840 = -450/840
5. After reducing the fraction, the answer is -15/28

MathStep (Works offline)

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

Related: ⁵⁴/₅₆-⁹⁰/₃₀ ⁵⁴/₅₆-⁴⁵/₆₀ ⁵⁴/₅₆-⁴⁵/₉₀

Subtract Fractions Calculator