Answers

Subtract 70/18 from 48/20

1^st number: 2 8/20, 2^nd number: 3 16/18

48/20 - 70/18 is -67/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 18 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   48/20 = 48 × 9/20 × 9 = 432/180
3. Likewise, for the 2nd fraction, since 18 × 10 = 180,
   70/18 = 70 × 10/18 × 10 = 700/180
4. Subtract the two like fractions:
   432/180 - 700/180 = 432 - 700/180 = -268/180
5. After reducing the fraction, the answer is -67/45

MathStep (Works offline)

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

Related: ⁹⁶/₂₀-⁷⁰/₁₈ ⁴⁸/₄₀-⁷⁰/₁₈ ⁴⁸/₂₀-⁷⁰/₃₆ ⁴⁸/₆₀-⁷⁰/₁₈ ⁴⁸/₂₀-⁷⁰/₅₄ ⁴⁸/₂₀-⁷⁰/₉₀

Subtract Fractions Calculator