Answers

Subtract 9/21 from 90/60

1^st number: 1 30/60, 2^nd number: 9/21

90/60 - 9/21 is 15/14.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 60 and 21 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 60 × 7 = 420,
   90/60 = 90 × 7/60 × 7 = 630/420
3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
   9/21 = 9 × 20/21 × 20 = 180/420
4. Subtract the two like fractions:
   630/420 - 180/420 = 630 - 180/420 = 450/420
5. After reducing the fraction, the answer is 15/14
6. In mixed form: 11/14

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