Answers

Subtract 7/3 from 18/90

1^st number: 18/90, 2^nd number: 2 1/3

18/90 - 7/3 is -32/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 3 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   18/90 = 18 × 1/90 × 1 = 18/90
3. Likewise, for the 2nd fraction, since 3 × 30 = 90,
   7/3 = 7 × 30/3 × 30 = 210/90
4. Subtract the two like fractions:
   18/90 - 210/90 = 18 - 210/90 = -192/90
5. After reducing the fraction, the answer is -32/15

MathStep (Works offline)

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

Related: ³⁶/₉₀-⁷/₃ ¹⁸/₉₀-¹⁴/₃ ¹⁸/₉₀-⁷/₆ ⁵⁴/₉₀-⁷/₃ ¹⁸/₉₀-²¹/₃ ¹⁸/₉₀-⁷/₉ ¹⁸/₉₀-³⁵/₃ ¹⁸/₉₀-⁷/₁₅ ¹⁸/₉₀-⁴⁹/₃ ¹⁸/₉₀-⁷/₂₁

Subtract Fractions Calculator