Answers

Subtract 4/90 from 63/20

1^st number: 3 3/20, 2^nd number: 4/90

63/20 - 4/90 is 559/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   63/20 = 63 × 9/20 × 9 = 567/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   4/90 = 4 × 2/90 × 2 = 8/180
4. Subtract the two like fractions:
   567/180 - 8/180 = 567 - 8/180 = 559/180
5. In mixed form: 319/180

MathStep (Works offline)

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

Related: ⁶³/₂₀-⁸/₉₀ ⁶³/₄₀-⁴/₉₀ ⁶³/₂₀-¹²/₉₀ ⁶³/₆₀-⁴/₉₀ ⁶³/₂₀-²⁰/₉₀ ⁶³/₂₀-²⁸/₉₀

Subtract Fractions Calculator