Answers

Subtract 30/60 from 1/45

1/45 - 30/60 is -43/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 60 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   1/45 = 1 × 4/45 × 4 = 4/180
3. Likewise, for the 2nd fraction, since 60 × 3 = 180,
   30/60 = 30 × 3/60 × 3 = 90/180
4. Subtract the two like fractions:
   4/180 - 90/180 = 4 - 90/180 = -86/180
5. After reducing the fraction, the answer is -43/90

MathStep (Works offline)

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

Related: ²/₄₅-³⁰/₆₀ ¹/₉₀-³⁰/₆₀ ³/₄₅-³⁰/₆₀ ¹/₄₅-⁹⁰/₆₀ ⁵/₄₅-³⁰/₆₀ ⁷/₄₅-³⁰/₆₀

Subtract Fractions Calculator