Answers

Subtract 70/6 from 21/45

1^st number: 21/45, 2^nd number: 11 4/6

21/45 - 70/6 is -56/5.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 6 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 45 × 2 = 90,
   21/45 = 21 × 2/45 × 2 = 42/90
3. Likewise, for the 2nd fraction, since 6 × 15 = 90,
   70/6 = 70 × 15/6 × 15 = 1050/90
4. Subtract the two like fractions:
   42/90 - 1050/90 = 42 - 1050/90 = -1008/90
5. After reducing the fraction, the answer is -56/5

MathStep (Works offline)

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

Related: ⁴²/₄₅-⁷⁰/₆ ²¹/₉₀-⁷⁰/₆ ²¹/₄₅-⁷⁰/₁₂ ⁶³/₄₅-⁷⁰/₆ ²¹/₄₅-⁷⁰/₁₈ ²¹/₄₅-⁷⁰/₃₀ ²¹/₄₅-⁷⁰/₄₂

Subtract Fractions Calculator