Answers

Subtract 3/63 from 90/20

1^st number: 4 10/20, 2^nd number: 3/63

90/20 - 3/63 is 187/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 63 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 20 × 63 = 1260,
   90/20 = 90 × 63/20 × 63 = 5670/1260
3. Likewise, for the 2nd fraction, since 63 × 20 = 1260,
   3/63 = 3 × 20/63 × 20 = 60/1260
4. Subtract the two like fractions:
   5670/1260 - 60/1260 = 5670 - 60/1260 = 5610/1260
5. After reducing the fraction, the answer is 187/42
6. In mixed form: 419/42

MathStep (Works offline)

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

Related: ⁹⁰/₂₀-⁶/₆₃ ⁹⁰/₄₀-³/₆₃ ⁹⁰/₂₀-⁹/₆₃ ⁹⁰/₆₀-³/₆₃ ⁹⁰/₂₀-¹⁵/₆₃ ⁹⁰/₂₀-²¹/₆₃

Subtract Fractions Calculator