Answers

Subtract 35/36 from 28/20

1^st number: 1 8/20, 2^nd number: 35/36

28/20 - 35/36 is 77/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 36 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   28/20 = 28 × 9/20 × 9 = 252/180
3. Likewise, for the 2nd fraction, since 36 × 5 = 180,
   35/36 = 35 × 5/36 × 5 = 175/180
4. Subtract the two like fractions:
   252/180 - 175/180 = 252 - 175/180 = 77/180

MathStep (Works offline)

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

Related: ⁵⁶/₂₀-³⁵/₃₆ ²⁸/₂₀-⁷⁰/₃₆ ²⁸/₄₀-³⁵/₃₆ ²⁸/₂₀-³⁵/₇₂ ⁸⁴/₂₀-³⁵/₃₆ ²⁸/₆₀-³⁵/₃₆

Subtract Fractions Calculator