Answers

Subtract 54/48 from 30/40

1^st number: 30/40, 2^nd number: 1 6/48

30/40 - 54/48 is -3/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 48 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 40 × 6 = 240,
   30/40 = 30 × 6/40 × 6 = 180/240
3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
   54/48 = 54 × 5/48 × 5 = 270/240
4. Subtract the two like fractions:
   180/240 - 270/240 = 180 - 270/240 = -90/240
5. After reducing the fraction, the answer is -3/8

MathStep (Works offline)

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

Related: ⁶⁰/₄₀-⁵⁴/₄₈ ³⁰/₈₀-⁵⁴/₄₈ ³⁰/₄₀-⁵⁴/₉₆ ⁹⁰/₄₀-⁵⁴/₄₈

Subtract Fractions Calculator