Answers

Subtract 27/15 from 15/90

1^st number: 15/90, 2^nd number: 1 12/15

15/90 - 27/15 is -49/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 15 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   15/90 = 15 × 1/90 × 1 = 15/90
3. Likewise, for the 2nd fraction, since 15 × 6 = 90,
   27/15 = 27 × 6/15 × 6 = 162/90
4. Subtract the two like fractions:
   15/90 - 162/90 = 15 - 162/90 = -147/90
5. After reducing the fraction, the answer is -49/30

MathStep (Works offline)

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

Related: ³⁰/₉₀-²⁷/₁₅ ¹⁵/₉₀-⁵⁴/₁₅ ¹⁵/₉₀-²⁷/₃₀ ⁴⁵/₉₀-²⁷/₁₅ ¹⁵/₉₀-⁸¹/₁₅ ¹⁵/₉₀-²⁷/₄₅ ⁷⁵/₉₀-²⁷/₁₅ ¹⁵/₉₀-²⁷/₇₅

Subtract Fractions Calculator