Answers

Subtract 30/84 from 36/40

36/40 - 30/84 is 19/35.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 84 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   36/40 = 36 × 21/40 × 21 = 756/840
3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
   30/84 = 30 × 10/84 × 10 = 300/840
4. Subtract the two like fractions:
   756/840 - 300/840 = 756 - 300/840 = 456/840
5. After reducing the fraction, the answer is 19/35

MathStep (Works offline)

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

Related: ⁷²/₄₀-³⁰/₈₄ ³⁶/₄₀-⁶⁰/₈₄ ³⁶/₈₀-³⁰/₈₄ ³⁶/₄₀-⁹⁰/₈₄

Subtract Fractions Calculator