Answers

Subtract 28/40 from 10/75

10/75 - 28/40 is -17/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 40 is 600
   
   Next, find the equivalent fraction of both fractional numbers with denominator 600
2. For the 1st fraction, since 75 × 8 = 600,
   10/75 = 10 × 8/75 × 8 = 80/600
3. Likewise, for the 2nd fraction, since 40 × 15 = 600,
   28/40 = 28 × 15/40 × 15 = 420/600
4. Subtract the two like fractions:
   80/600 - 420/600 = 80 - 420/600 = -340/600
5. After reducing the fraction, the answer is -17/30

MathStep (Works offline)

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

Related: ²⁰/₇₅-²⁸/₄₀ ¹⁰/₇₅-⁵⁶/₄₀ ¹⁰/₇₅-²⁸/₈₀ ³⁰/₇₅-²⁸/₄₀ ¹⁰/₇₅-⁸⁴/₄₀ ⁵⁰/₇₅-²⁸/₄₀ ⁷⁰/₇₅-²⁸/₄₀

Subtract Fractions Calculator