Answers

Subtract 28/16 from 84/90

1^st number: 84/90, 2^nd number: 1 12/16

84/90 - 28/16 is -49/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 16 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 90 × 8 = 720,
   84/90 = 84 × 8/90 × 8 = 672/720
3. Likewise, for the 2nd fraction, since 16 × 45 = 720,
   28/16 = 28 × 45/16 × 45 = 1260/720
4. Subtract the two like fractions:
   672/720 - 1260/720 = 672 - 1260/720 = -588/720
5. After reducing the fraction, the answer is -49/60

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