Answers

Subtract 7/84 from 30/42

30/42 - 7/84 is 53/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   30/42 = 30 × 2/42 × 2 = 60/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   7/84 = 7 × 1/84 × 1 = 7/84
4. Subtract the two like fractions:
   60/84 - 7/84 = 60 - 7/84 = 53/84

MathStep (Works offline)

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

Related: ⁶⁰/₄₂-⁷/₈₄ ³⁰/₄₂-¹⁴/₈₄ ³⁰/₈₄-⁷/₈₄ ⁹⁰/₄₂-⁷/₈₄ ³⁰/₄₂-²¹/₈₄ ³⁰/₄₂-³⁵/₈₄ ³⁰/₄₂-⁴⁹/₈₄

Subtract Fractions Calculator