Answers

Subtract 3/20 from 63/90

63/90 - 3/20 is 11/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   63/90 = 63 × 2/90 × 2 = 126/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   3/20 = 3 × 9/20 × 9 = 27/180
4. Subtract the two like fractions:
   126/180 - 27/180 = 126 - 27/180 = 99/180
5. After reducing the fraction, the answer is 11/20

MathStep (Works offline)

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

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

Subtract Fractions Calculator