Answers

Subtract 48/21 from 16/90

1^st number: 16/90, 2^nd number: 2 6/21

16/90 - 48/21 is -664/315.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 21 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   16/90 = 16 × 7/90 × 7 = 112/630
3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
   48/21 = 48 × 30/21 × 30 = 1440/630
4. Subtract the two like fractions:
   112/630 - 1440/630 = 112 - 1440/630 = -1328/630
5. After reducing the fraction, the answer is -664/315

MathStep (Works offline)

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

Related: ³²/₉₀-⁴⁸/₂₁ ¹⁶/₉₀-⁹⁶/₂₁ ¹⁶/₉₀-⁴⁸/₄₂ ⁴⁸/₉₀-⁴⁸/₂₁ ¹⁶/₉₀-⁴⁸/₆₃ ⁸⁰/₉₀-⁴⁸/₂₁

Subtract Fractions Calculator