Answers

Subtract 90/63 from 45/16

1^st number: 2 13/16, 2^nd number: 1 27/63

45/16 - 90/63 is 155/112.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 63 is 1008
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1008
2. For the 1st fraction, since 16 × 63 = 1008,
   45/16 = 45 × 63/16 × 63 = 2835/1008
3. Likewise, for the 2nd fraction, since 63 × 16 = 1008,
   90/63 = 90 × 16/63 × 16 = 1440/1008
4. Subtract the two like fractions:
   2835/1008 - 1440/1008 = 2835 - 1440/1008 = 1395/1008
5. After reducing the fraction, the answer is 155/112
6. In mixed form: 143/112

MathStep (Works offline)

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

Related: ⁹⁰/₁₆-⁹⁰/₆₃ ⁴⁵/₃₂-⁹⁰/₆₃ ⁴⁵/₄₈-⁹⁰/₆₃ ⁴⁵/₈₀-⁹⁰/₆₃

Subtract Fractions Calculator