Answers

Subtract 80/70 from 50/18

1^st number: 2 14/18, 2^nd number: 1 10/70

50/18 - 80/70 is 103/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 18 × 35 = 630,
   50/18 = 50 × 35/18 × 35 = 1750/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   80/70 = 80 × 9/70 × 9 = 720/630
4. Subtract the two like fractions:
   1750/630 - 720/630 = 1750 - 720/630 = 1030/630
5. After reducing the fraction, the answer is 103/63
6. In mixed form: 140/63

MathStep (Works offline)

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

Related: ⁵⁰/₃₆-⁸⁰/₇₀ ⁵⁰/₅₄-⁸⁰/₇₀ ⁵⁰/₉₀-⁸⁰/₇₀

Subtract Fractions Calculator