Answers

Subtract 70/9 from 27/90

1^st number: 27/90, 2^nd number: 7 7/9

27/90 - 70/9 is -673/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 9 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   27/90 = 27 × 1/90 × 1 = 27/90
3. Likewise, for the 2nd fraction, since 9 × 10 = 90,
   70/9 = 70 × 10/9 × 10 = 700/90
4. Subtract the two like fractions:
   27/90 - 700/90 = 27 - 700/90 = -673/90

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