Answers

Subtract 48/21 from 16/12

1^st number: 1 4/12, 2^nd number: 2 6/21

16/12 - 48/21 is -20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   16/12 = 16 × 7/12 × 7 = 112/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   48/21 = 48 × 4/21 × 4 = 192/84
4. Subtract the two like fractions:
   112/84 - 192/84 = 112 - 192/84 = -80/84
5. After reducing the fraction, the answer is -20/21

MathStep (Works offline)

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

Related: ³²/₁₂-⁴⁸/₂₁ ¹⁶/₁₂-⁹⁶/₂₁ ¹⁶/₂₄-⁴⁸/₂₁ ¹⁶/₁₂-⁴⁸/₄₂ ⁴⁸/₁₂-⁴⁸/₂₁ ¹⁶/₃₆-⁴⁸/₂₁ ¹⁶/₁₂-⁴⁸/₆₃ ⁸⁰/₁₂-⁴⁸/₂₁ ¹⁶/₆₀-⁴⁸/₂₁ ¹⁶/₈₄-⁴⁸/₂₁

Subtract Fractions Calculator