Answers

Subtract 90/14 from 27/40

1^st number: 27/40, 2^nd number: 6 6/14

27/40 - 90/14 is -1611/280.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 14 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   27/40 = 27 × 7/40 × 7 = 189/280
3. Likewise, for the 2nd fraction, since 14 × 20 = 280,
   90/14 = 90 × 20/14 × 20 = 1800/280
4. Subtract the two like fractions:
   189/280 - 1800/280 = 189 - 1800/280 = -1611/280

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