Answers

Subtract 30/90 from 24/21

1^st number: 1 3/21, 2^nd number: 30/90

24/21 - 30/90 is 17/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 21 × 30 = 630,
   24/21 = 24 × 30/21 × 30 = 720/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   30/90 = 30 × 7/90 × 7 = 210/630
4. Subtract the two like fractions:
   720/630 - 210/630 = 720 - 210/630 = 510/630
5. After reducing the fraction, the answer is 17/21

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