Answers

Subtract 63/8 from 25/90

1^st number: 25/90, 2^nd number: 7 7/8

25/90 - 63/8 is -547/72.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 8 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 90 × 4 = 360,
   25/90 = 25 × 4/90 × 4 = 100/360
3. Likewise, for the 2nd fraction, since 8 × 45 = 360,
   63/8 = 63 × 45/8 × 45 = 2835/360
4. Subtract the two like fractions:
   100/360 - 2835/360 = 100 - 2835/360 = -2735/360
5. After reducing the fraction, the answer is -547/72

MathStep (Works offline)

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

Related: ⁵⁰/₉₀-⁶³/₈ ²⁵/₉₀-⁶³/₁₆ ⁷⁵/₉₀-⁶³/₈ ²⁵/₉₀-⁶³/₂₄ ²⁵/₉₀-⁶³/₄₀ ²⁵/₉₀-⁶³/₅₆

Subtract Fractions Calculator