Answers

Subtract 81/12 from 14/90

1^st number: 14/90, 2^nd number: 6 9/12

14/90 - 81/12 is -1187/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 12 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   14/90 = 14 × 2/90 × 2 = 28/180
3. Likewise, for the 2nd fraction, since 12 × 15 = 180,
   81/12 = 81 × 15/12 × 15 = 1215/180
4. Subtract the two like fractions:
   28/180 - 1215/180 = 28 - 1215/180 = -1187/180

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