Answers

Subtract 45/40 from 10/80

1^st number: 10/80, 2^nd number: 1 5/40

10/80 - 45/40 is -1/1.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 40 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   10/80 = 10 × 1/80 × 1 = 10/80
3. Likewise, for the 2nd fraction, since 40 × 2 = 80,
   45/40 = 45 × 2/40 × 2 = 90/80
4. Subtract the two like fractions:
   10/80 - 90/80 = 10 - 90/80 = -80/80
5. After reducing the fraction, the answer is -1/1

MathStep (Works offline)

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

Related: ²⁰/₈₀-⁴⁵/₄₀ ¹⁰/₈₀-⁹⁰/₄₀ ¹⁰/₈₀-⁴⁵/₈₀ ³⁰/₈₀-⁴⁵/₄₀ ⁵⁰/₈₀-⁴⁵/₄₀ ⁷⁰/₈₀-⁴⁵/₄₀

Subtract Fractions Calculator