Answers

Subtract 20/28 from 45/8

1^st number: 5 5/8, 2^nd number: 20/28

45/8 - 20/28 is 275/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 28 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 8 × 7 = 56,
   45/8 = 45 × 7/8 × 7 = 315/56
3. Likewise, for the 2nd fraction, since 28 × 2 = 56,
   20/28 = 20 × 2/28 × 2 = 40/56
4. Subtract the two like fractions:
   315/56 - 40/56 = 315 - 40/56 = 275/56
5. In mixed form: 451/56

MathStep (Works offline)

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

Related: ⁹⁰/₈-²⁰/₂₈ ⁴⁵/₈-⁴⁰/₂₈ ⁴⁵/₁₆-²⁰/₂₈ ⁴⁵/₈-²⁰/₅₆ ⁴⁵/₈-⁶⁰/₂₈ ⁴⁵/₂₄-²⁰/₂₈ ⁴⁵/₈-²⁰/₈₄ ⁴⁵/₄₀-²⁰/₂₈ ⁴⁵/₅₆-²⁰/₂₈

Subtract Fractions Calculator