Answers

Subtract 21/32 from 21/20

1^st number: 1 1/20, 2^nd number: 21/32

21/20 - 21/32 is 63/160.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 32 is 160
   
   Next, find the equivalent fraction of both fractional numbers with denominator 160
2. For the 1st fraction, since 20 × 8 = 160,
   21/20 = 21 × 8/20 × 8 = 168/160
3. Likewise, for the 2nd fraction, since 32 × 5 = 160,
   21/32 = 21 × 5/32 × 5 = 105/160
4. Subtract the two like fractions:
   168/160 - 105/160 = 168 - 105/160 = 63/160

MathStep (Works offline)

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

Related: ⁴²/₂₀-²¹/₃₂ ²¹/₂₀-⁴²/₃₂ ²¹/₄₀-²¹/₃₂ ²¹/₂₀-²¹/₆₄ ⁶³/₂₀-²¹/₃₂ ²¹/₂₀-⁶³/₃₂ ²¹/₆₀-²¹/₃₂ ²¹/₂₀-²¹/₉₆

Subtract Fractions Calculator