Answers

Subtract 28/75 from 3/40

3/40 - 28/75 is -179/600.

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,
   3/40 = 3 × 15/40 × 15 = 45/600
3. Likewise, for the 2nd fraction, since 75 × 8 = 600,
   28/75 = 28 × 8/75 × 8 = 224/600
4. Subtract the two like fractions:
   45/600 - 224/600 = 45 - 224/600 = -179/600

MathStep (Works offline)

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

Related: ⁶/₄₀-²⁸/₇₅ ³/₄₀-⁵⁶/₇₅ ³/₈₀-²⁸/₇₅ ⁹/₄₀-²⁸/₇₅ ³/₄₀-⁸⁴/₇₅ ¹⁵/₄₀-²⁸/₇₅ ²¹/₄₀-²⁸/₇₅

Subtract Fractions Calculator