Answers

Subtract 20/45 from 35/84

35/84 - 20/45 is -1/36.

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,
   35/84 = 35 × 15/84 × 15 = 525/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   20/45 = 20 × 28/45 × 28 = 560/1260
4. Subtract the two like fractions:
   525/1260 - 560/1260 = 525 - 560/1260 = -35/1260
5. After reducing the fraction, the answer is -1/36

MathStep (Works offline)

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

Related: ⁷⁰/₈₄-²⁰/₄₅ ³⁵/₈₄-⁴⁰/₄₅ ³⁵/₈₄-²⁰/₉₀ ³⁵/₈₄-⁶⁰/₄₅

Subtract Fractions Calculator