Answers

Subtract 30/40 from 40/28

1^st number: 1 12/28, 2^nd number: 30/40

40/28 - 30/40 is 19/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 28 × 10 = 280,
   40/28 = 40 × 10/28 × 10 = 400/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   30/40 = 30 × 7/40 × 7 = 210/280
4. Subtract the two like fractions:
   400/280 - 210/280 = 400 - 210/280 = 190/280
5. After reducing the fraction, the answer is 19/28

MathStep (Works offline)

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

Related: ⁸⁰/₂₈-³⁰/₄₀ ⁴⁰/₂₈-⁶⁰/₄₀ ⁴⁰/₅₆-³⁰/₄₀ ⁴⁰/₂₈-³⁰/₈₀ ⁴⁰/₂₈-⁹⁰/₄₀ ⁴⁰/₈₄-³⁰/₄₀

Subtract Fractions Calculator