Answers

Subtract 15/45 from 30/84

30/84 - 15/45 is 1/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 45 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   30/84 = 30 × 15/84 × 15 = 450/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   15/45 = 15 × 28/45 × 28 = 420/1260
4. Subtract the two like fractions:
   450/1260 - 420/1260 = 450 - 420/1260 = 30/1260
5. After reducing the fraction, the answer is 1/42

MathStep (Works offline)

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

Related: ⁶⁰/₈₄-¹⁵/₄₅ ³⁰/₈₄-³⁰/₄₅ ³⁰/₈₄-¹⁵/₉₀ ⁹⁰/₈₄-¹⁵/₄₅ ³⁰/₈₄-⁷⁵/₄₅

Subtract Fractions Calculator