Answers

Subtract 15/80 from 70/50

1^st number: 1 20/50, 2^nd number: 15/80

70/50 - 15/80 is 97/80.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 80 is 400
   
   Next, find the equivalent fraction of both fractional numbers with denominator 400
2. For the 1st fraction, since 50 × 8 = 400,
   70/50 = 70 × 8/50 × 8 = 560/400
3. Likewise, for the 2nd fraction, since 80 × 5 = 400,
   15/80 = 15 × 5/80 × 5 = 75/400
4. Subtract the two like fractions:
   560/400 - 75/400 = 560 - 75/400 = 485/400
5. After reducing the fraction, the answer is 97/80
6. In mixed form: 117/80

MathStep (Works offline)

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

Related: ⁷⁰/₅₀-³⁰/₈₀ ⁷⁰/₅₀-⁴⁵/₈₀ ⁷⁰/₅₀-⁷⁵/₈₀

Subtract Fractions Calculator