Answers

Subtract 63/81 from 84/2

1^st number: 42 0/2, 2^nd number: 63/81

84/2 - 63/81 is 371/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 81 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 2 × 81 = 162,
   84/2 = 84 × 81/2 × 81 = 6804/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   63/81 = 63 × 2/81 × 2 = 126/162
4. Subtract the two like fractions:
   6804/162 - 126/162 = 6804 - 126/162 = 6678/162
5. After reducing the fraction, the answer is 371/9
6. In mixed form: 412/9

MathStep (Works offline)

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

Related: ⁸⁴/₄-⁶³/₈₁ ⁸⁴/₆-⁶³/₈₁ ⁸⁴/₁₀-⁶³/₈₁ ⁸⁴/₁₄-⁶³/₈₁

Subtract Fractions Calculator