Answers

Subtract 2/63 from 1/40

1/40 - 2/63 is -17/2520.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 63 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 40 × 63 = 2520,
   1/40 = 1 × 63/40 × 63 = 63/2520
3. Likewise, for the 2nd fraction, since 63 × 40 = 2520,
   2/63 = 2 × 40/63 × 40 = 80/2520
4. Subtract the two like fractions:
   63/2520 - 80/2520 = 63 - 80/2520 = -17/2520

MathStep (Works offline)

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

Related: ²/₄₀-²/₆₃ ¹/₄₀-⁴/₆₃ ¹/₈₀-²/₆₃ ³/₄₀-²/₆₃ ¹/₄₀-⁶/₆₃ ⁵/₄₀-²/₆₃ ¹/₄₀-¹⁰/₆₃ ⁷/₄₀-²/₆₃ ¹/₄₀-¹⁴/₆₃

Subtract Fractions Calculator