Answers

Subtract 7/90 from 9/15

9/15 - 7/90 is 47/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 15 × 6 = 90,
   9/15 = 9 × 6/15 × 6 = 54/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   7/90 = 7 × 1/90 × 1 = 7/90
4. Subtract the two like fractions:
   54/90 - 7/90 = 54 - 7/90 = 47/90

MathStep (Works offline)

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

Related: ¹⁸/₁₅-⁷/₉₀ ⁹/₁₅-¹⁴/₉₀ ⁹/₃₀-⁷/₉₀ ²⁷/₁₅-⁷/₉₀ ⁹/₁₅-²¹/₉₀ ⁹/₄₅-⁷/₉₀ ⁴⁵/₁₅-⁷/₉₀ ⁹/₁₅-³⁵/₉₀ ⁹/₇₅-⁷/₉₀ ⁶³/₁₅-⁷/₉₀ ⁹/₁₅-⁴⁹/₉₀

Subtract Fractions Calculator