Answers

Subtract 45/5 from 45/80

1^st number: 45/80, 2^nd number: 9 0/5

45/80 - 45/5 is -135/16.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 5 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   45/80 = 45 × 1/80 × 1 = 45/80
3. Likewise, for the 2nd fraction, since 5 × 16 = 80,
   45/5 = 45 × 16/5 × 16 = 720/80
4. Subtract the two like fractions:
   45/80 - 720/80 = 45 - 720/80 = -675/80
5. After reducing the fraction, the answer is -135/16

MathStep (Works offline)

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

Related: ⁹⁰/₈₀-⁴⁵/₅ ⁴⁵/₈₀-⁹⁰/₅ ⁴⁵/₈₀-⁴⁵/₁₀ ⁴⁵/₈₀-⁴⁵/₁₅ ⁴⁵/₈₀-⁴⁵/₂₅ ⁴⁵/₈₀-⁴⁵/₃₅

Subtract Fractions Calculator