Answers

Subtract 15/75 from 6/40

6/40 - 15/75 is -1/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 75 is 600
   
   Next, find the equivalent fraction of both fractional numbers with denominator 600
2. For the 1st fraction, since 40 × 15 = 600,
   6/40 = 6 × 15/40 × 15 = 90/600
3. Likewise, for the 2nd fraction, since 75 × 8 = 600,
   15/75 = 15 × 8/75 × 8 = 120/600
4. Subtract the two like fractions:
   90/600 - 120/600 = 90 - 120/600 = -30/600
5. After reducing the fraction, the answer is -1/20

MathStep (Works offline)

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

Related: ¹²/₄₀-¹⁵/₇₅ ⁶/₄₀-³⁰/₇₅ ⁶/₈₀-¹⁵/₇₅ ¹⁸/₄₀-¹⁵/₇₅ ⁶/₄₀-⁴⁵/₇₅ ³⁰/₄₀-¹⁵/₇₅ ⁴²/₄₀-¹⁵/₇₅

Subtract Fractions Calculator