Answers

Subtract 28/30 from 25/84

25/84 - 28/30 is -89/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 30 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   25/84 = 25 × 5/84 × 5 = 125/420
3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
   28/30 = 28 × 14/30 × 14 = 392/420
4. Subtract the two like fractions:
   125/420 - 392/420 = 125 - 392/420 = -267/420
5. After reducing the fraction, the answer is -89/140

MathStep (Works offline)

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

Related: ⁵⁰/₈₄-²⁸/₃₀ ²⁵/₈₄-⁵⁶/₃₀ ²⁵/₈₄-²⁸/₆₀ ⁷⁵/₈₄-²⁸/₃₀ ²⁵/₈₄-⁸⁴/₃₀ ²⁵/₈₄-²⁸/₉₀

Subtract Fractions Calculator