Answers

Subtract 21/20 from 84/96

1^st number: 84/96, 2^nd number: 1 1/20

84/96 - 21/20 is -7/40.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 96 and 20 is 480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 480
2. For the 1st fraction, since 96 × 5 = 480,
   84/96 = 84 × 5/96 × 5 = 420/480
3. Likewise, for the 2nd fraction, since 20 × 24 = 480,
   21/20 = 21 × 24/20 × 24 = 504/480
4. Subtract the two like fractions:
   420/480 - 504/480 = 420 - 504/480 = -84/480
5. After reducing the fraction, the answer is -7/40

MathStep (Works offline)

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

Related: ⁸⁴/₉₆-⁴²/₂₀ ⁸⁴/₉₆-²¹/₄₀ ⁸⁴/₉₆-⁶³/₂₀ ⁸⁴/₉₆-²¹/₆₀

Subtract Fractions Calculator