Answers

Subtract 56/20 from 9/90

1^st number: 9/90, 2^nd number: 2 16/20

9/90 - 56/20 is -27/10.

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,
   9/90 = 9 × 2/90 × 2 = 18/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   56/20 = 56 × 9/20 × 9 = 504/180
4. Subtract the two like fractions:
   18/180 - 504/180 = 18 - 504/180 = -486/180
5. After reducing the fraction, the answer is -27/10

MathStep (Works offline)

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

Related: ¹⁸/₉₀-⁵⁶/₂₀ ⁹/₉₀-⁵⁶/₄₀ ²⁷/₉₀-⁵⁶/₂₀ ⁹/₉₀-⁵⁶/₆₀ ⁴⁵/₉₀-⁵⁶/₂₀ ⁶³/₉₀-⁵⁶/₂₀

Subtract Fractions Calculator