Answers

Subtract 20/84 from 90/10

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

90/10 - 20/84 is 184/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 84 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 10 × 42 = 420,
   90/10 = 90 × 42/10 × 42 = 3780/420
3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
   20/84 = 20 × 5/84 × 5 = 100/420
4. Subtract the two like fractions:
   3780/420 - 100/420 = 3780 - 100/420 = 3680/420
5. After reducing the fraction, the answer is 184/21
6. In mixed form: 816/21

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