Answers

Subtract 84/50 from 70/20

1^st number: 3 10/20, 2^nd number: 1 34/50

70/20 - 84/50 is 91/50.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 50 is 100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 100
2. For the 1st fraction, since 20 × 5 = 100,
   70/20 = 70 × 5/20 × 5 = 350/100
3. Likewise, for the 2nd fraction, since 50 × 2 = 100,
   84/50 = 84 × 2/50 × 2 = 168/100
4. Subtract the two like fractions:
   350/100 - 168/100 = 350 - 168/100 = 182/100
5. After reducing the fraction, the answer is 91/50
6. In mixed form: 141/50

MathStep (Works offline)

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

Related: ⁷⁰/₄₀-⁸⁴/₅₀ ⁷⁰/₆₀-⁸⁴/₅₀

Subtract Fractions Calculator