Answers

Subtract 40/8 from 1/90

1^st number: 1/90, 2^nd number: 5 0/8

1/90 - 40/8 is -449/90.

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,
   1/90 = 1 × 4/90 × 4 = 4/360
3. Likewise, for the 2nd fraction, since 8 × 45 = 360,
   40/8 = 40 × 45/8 × 45 = 1800/360
4. Subtract the two like fractions:
   4/360 - 1800/360 = 4 - 1800/360 = -1796/360
5. After reducing the fraction, the answer is -449/90

MathStep (Works offline)

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

Related: ²/₉₀-⁴⁰/₈ ¹/₉₀-⁸⁰/₈ ¹/₉₀-⁴⁰/₁₆ ³/₉₀-⁴⁰/₈ ¹/₉₀-⁴⁰/₂₄ ⁵/₉₀-⁴⁰/₈ ⁷/₉₀-⁴⁰/₈ ¹/₉₀-⁴⁰/₅₆

Subtract Fractions Calculator