Answers

Subtract 70/98 from 10/20

10/20 - 70/98 is -3/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 98 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 20 × 49 = 980,
   10/20 = 10 × 49/20 × 49 = 490/980
3. Likewise, for the 2nd fraction, since 98 × 10 = 980,
   70/98 = 70 × 10/98 × 10 = 700/980
4. Subtract the two like fractions:
   490/980 - 700/980 = 490 - 700/980 = -210/980
5. After reducing the fraction, the answer is -3/14

MathStep (Works offline)

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

Related: ¹⁰/₄₀-⁷⁰/₉₈ ³⁰/₂₀-⁷⁰/₉₈ ¹⁰/₆₀-⁷⁰/₉₈ ⁵⁰/₂₀-⁷⁰/₉₈ ⁷⁰/₂₀-⁷⁰/₉₈

Subtract Fractions Calculator