Answers

Subtract 30/80 from 40/28

1^st number: 1 12/28, 2^nd number: 30/80

40/28 - 30/80 is 59/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 28 × 20 = 560,
   40/28 = 40 × 20/28 × 20 = 800/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   30/80 = 30 × 7/80 × 7 = 210/560
4. Subtract the two like fractions:
   800/560 - 210/560 = 800 - 210/560 = 590/560
5. After reducing the fraction, the answer is 59/56
6. In mixed form: 13/56

MathStep (Works offline)

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

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

Subtract Fractions Calculator