Answers

Subtract 25/20 from 28/35

1^st number: 28/35, 2^nd number: 1 5/20

28/35 - 25/20 is -9/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 35 × 4 = 140,
   28/35 = 28 × 4/35 × 4 = 112/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   25/20 = 25 × 7/20 × 7 = 175/140
4. Subtract the two like fractions:
   112/140 - 175/140 = 112 - 175/140 = -63/140
5. After reducing the fraction, the answer is -9/20

MathStep (Works offline)

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

Related: ⁵⁶/₃₅-²⁵/₂₀ ²⁸/₃₅-⁵⁰/₂₀ ²⁸/₇₀-²⁵/₂₀ ²⁸/₃₅-²⁵/₄₀ ⁸⁴/₃₅-²⁵/₂₀ ²⁸/₃₅-⁷⁵/₂₀ ²⁸/₃₅-²⁵/₆₀

Subtract Fractions Calculator