Answers

Subtract 40/80 from 10/8

1^st number: 1 2/8, 2^nd number: 40/80

10/8 - 40/80 is 3/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 8 × 10 = 80,
   10/8 = 10 × 10/8 × 10 = 100/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   40/80 = 40 × 1/80 × 1 = 40/80
4. Subtract the two like fractions:
   100/80 - 40/80 = 100 - 40/80 = 60/80
5. After reducing the fraction, the answer is 3/4

MathStep (Works offline)

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

Related: ²⁰/₈-⁴⁰/₈₀ ¹⁰/₁₆-⁴⁰/₈₀ ³⁰/₈-⁴⁰/₈₀ ¹⁰/₂₄-⁴⁰/₈₀ ⁵⁰/₈-⁴⁰/₈₀ ¹⁰/₄₀-⁴⁰/₈₀ ⁷⁰/₈-⁴⁰/₈₀ ¹⁰/₅₆-⁴⁰/₈₀

Subtract Fractions Calculator