Answers

Subtract 35/20 from 4/90

1^st number: 4/90, 2^nd number: 1 15/20

4/90 - 35/20 is -307/180.

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,
   4/90 = 4 × 2/90 × 2 = 8/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   35/20 = 35 × 9/20 × 9 = 315/180
4. Subtract the two like fractions:
   8/180 - 315/180 = 8 - 315/180 = -307/180

MathStep (Works offline)

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

Related: ⁸/₉₀-³⁵/₂₀ ⁴/₉₀-⁷⁰/₂₀ ⁴/₉₀-³⁵/₄₀ ¹²/₉₀-³⁵/₂₀ ⁴/₉₀-³⁵/₆₀ ²⁰/₉₀-³⁵/₂₀ ²⁸/₉₀-³⁵/₂₀

Subtract Fractions Calculator