Answers

Subtract 70/81 from 28/14

1^st number: 2 0/14, 2^nd number: 70/81

28/14 - 70/81 is 92/81.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 81 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 14 × 81 = 1134,
   28/14 = 28 × 81/14 × 81 = 2268/1134
3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
   70/81 = 70 × 14/81 × 14 = 980/1134
4. Subtract the two like fractions:
   2268/1134 - 980/1134 = 2268 - 980/1134 = 1288/1134
5. After reducing the fraction, the answer is 92/81
6. In mixed form: 111/81

MathStep (Works offline)

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

Related: ⁵⁶/₁₄-⁷⁰/₈₁ ⁸⁴/₁₄-⁷⁰/₈₁ ²⁸/₄₂-⁷⁰/₈₁ ²⁸/₇₀-⁷⁰/₈₁ ²⁸/₉₈-⁷⁰/₈₁

Subtract Fractions Calculator