Answers

Subtract 2/90 from 4/40

4/40 - 2/90 is 7/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   4/40 = 4 × 9/40 × 9 = 36/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   2/90 = 2 × 4/90 × 4 = 8/360
4. Subtract the two like fractions:
   36/360 - 8/360 = 36 - 8/360 = 28/360
5. After reducing the fraction, the answer is 7/90

MathStep (Works offline)

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

Related: ⁸/₄₀-²/₉₀ ⁴/₄₀-⁴/₉₀ ⁴/₈₀-²/₉₀ ¹²/₄₀-²/₉₀ ⁴/₄₀-⁶/₉₀ ²⁰/₄₀-²/₉₀ ⁴/₄₀-¹⁰/₉₀ ²⁸/₄₀-²/₉₀ ⁴/₄₀-¹⁴/₉₀

Subtract Fractions Calculator