Answers

Subtract 20/84 from 90/9

1^st number: 10 0/9, 2^nd number: 20/84

90/9 - 20/84 is 205/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 9 × 28 = 252,
   90/9 = 90 × 28/9 × 28 = 2520/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   20/84 = 20 × 3/84 × 3 = 60/252
4. Subtract the two like fractions:
   2520/252 - 60/252 = 2520 - 60/252 = 2460/252
5. After reducing the fraction, the answer is 205/21
6. In mixed form: 916/21

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