Answers

Subtract 42/20 from 4/15

1^st number: 4/15, 2^nd number: 2 2/20

4/15 - 42/20 is -11/6.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 20 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   4/15 = 4 × 4/15 × 4 = 16/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
   42/20 = 42 × 3/20 × 3 = 126/60
4. Subtract the two like fractions:
   16/60 - 126/60 = 16 - 126/60 = -110/60
5. After reducing the fraction, the answer is -11/6

MathStep (Works offline)

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

Related: ⁸/₁₅-⁴²/₂₀ ⁴/₁₅-⁸⁴/₂₀ ⁴/₃₀-⁴²/₂₀ ⁴/₁₅-⁴²/₄₀ ¹²/₁₅-⁴²/₂₀ ⁴/₄₅-⁴²/₂₀ ⁴/₁₅-⁴²/₆₀ ²⁰/₁₅-⁴²/₂₀ ⁴/₇₅-⁴²/₂₀ ²⁸/₁₅-⁴²/₂₀

Subtract Fractions Calculator