Answers

Subtract 2/20 from 81/35

1^st number: 2 11/35, 2^nd number: 2/20

81/35 - 2/20 is 31/14.

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,
   81/35 = 81 × 4/35 × 4 = 324/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   2/20 = 2 × 7/20 × 7 = 14/140
4. Subtract the two like fractions:
   324/140 - 14/140 = 324 - 14/140 = 310/140
5. After reducing the fraction, the answer is 31/14
6. In mixed form: 23/14

MathStep (Works offline)

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

Related: ⁸¹/₃₅-⁴/₂₀ ⁸¹/₇₀-²/₂₀ ⁸¹/₃₅-²/₄₀ ⁸¹/₃₅-⁶/₂₀ ⁸¹/₃₅-²/₆₀ ⁸¹/₃₅-¹⁰/₂₀ ⁸¹/₃₅-¹⁴/₂₀

Subtract Fractions Calculator