Answers

Subtract 4/20 from 70/80

70/80 - 4/20 is 27/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 20 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 80 × 1 = 80,
   70/80 = 70 × 1/80 × 1 = 70/80
3. Likewise, for the 2nd fraction, since 20 × 4 = 80,
   4/20 = 4 × 4/20 × 4 = 16/80
4. Subtract the two like fractions:
   70/80 - 16/80 = 70 - 16/80 = 54/80
5. After reducing the fraction, the answer is 27/40

MathStep (Works offline)

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

Related: ⁷⁰/₈₀-⁸/₂₀ ⁷⁰/₈₀-⁴/₄₀ ⁷⁰/₈₀-¹²/₂₀ ⁷⁰/₈₀-⁴/₆₀ ⁷⁰/₈₀-²⁸/₂₀

Subtract Fractions Calculator