Answers

Subtract 70/16 from 15/20

1^st number: 15/20, 2^nd number: 4 6/16

15/20 - 70/16 is -29/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 16 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   15/20 = 15 × 4/20 × 4 = 60/80
3. Likewise, for the 2nd fraction, since 16 × 5 = 80,
   70/16 = 70 × 5/16 × 5 = 350/80
4. Subtract the two like fractions:
   60/80 - 350/80 = 60 - 350/80 = -290/80
5. After reducing the fraction, the answer is -29/8

MathStep (Works offline)

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

Related: ³⁰/₂₀-⁷⁰/₁₆ ¹⁵/₄₀-⁷⁰/₁₆ ¹⁵/₂₀-⁷⁰/₃₂ ⁴⁵/₂₀-⁷⁰/₁₆ ¹⁵/₆₀-⁷⁰/₁₆ ¹⁵/₂₀-⁷⁰/₄₈ ⁷⁵/₂₀-⁷⁰/₁₆ ¹⁵/₂₀-⁷⁰/₈₀

Subtract Fractions Calculator