Answers

Subtract 5/42 from 30/28

1^st number: 1 2/28, 2^nd number: 5/42

30/28 - 5/42 is 20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   30/28 = 30 × 3/28 × 3 = 90/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   5/42 = 5 × 2/42 × 2 = 10/84
4. Subtract the two like fractions:
   90/84 - 10/84 = 90 - 10/84 = 80/84
5. After reducing the fraction, the answer is 20/21

MathStep (Works offline)

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

Related: ⁶⁰/₂₈-⁵/₄₂ ³⁰/₂₈-¹⁰/₄₂ ³⁰/₅₆-⁵/₄₂ ³⁰/₂₈-⁵/₈₄ ⁹⁰/₂₈-⁵/₄₂ ³⁰/₂₈-¹⁵/₄₂ ³⁰/₈₄-⁵/₄₂ ³⁰/₂₈-²⁵/₄₂ ³⁰/₂₈-³⁵/₄₂

Subtract Fractions Calculator