Answers

Subtract 84/18 from 40/63

1^st number: 40/63, 2^nd number: 4 12/18

40/63 - 84/18 is -254/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   40/63 = 40 × 2/63 × 2 = 80/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   84/18 = 84 × 7/18 × 7 = 588/126
4. Subtract the two like fractions:
   80/126 - 588/126 = 80 - 588/126 = -508/126
5. After reducing the fraction, the answer is -254/63

MathStep (Works offline)

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

Related: ⁸⁰/₆₃-⁸⁴/₁₈ ⁴⁰/₆₃-⁸⁴/₃₆ ⁴⁰/₆₃-⁸⁴/₅₄ ⁴⁰/₆₃-⁸⁴/₉₀

Subtract Fractions Calculator