Answers

Subtract 90/4 from 63/90

1^st number: 63/90, 2^nd number: 22 2/4

63/90 - 90/4 is -109/5.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 4 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 4 × 45 = 180,
   90/4 = 90 × 45/4 × 45 = 4050/180
4. Subtract the two like fractions:
   126/180 - 4050/180 = 126 - 4050/180 = -3924/180
5. After reducing the fraction, the answer is -109/5

MathStep (Works offline)

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

Related: ⁶³/₉₀-⁹⁰/₈ ⁶³/₉₀-⁹⁰/₁₂ ⁶³/₉₀-⁹⁰/₂₀ ⁶³/₉₀-⁹⁰/₂₈

Subtract Fractions Calculator