Answers

Subtract 35/90 from 21/15

1^st number: 1 6/15, 2^nd number: 35/90

21/15 - 35/90 is 91/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 15 × 6 = 90,
   21/15 = 21 × 6/15 × 6 = 126/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   35/90 = 35 × 1/90 × 1 = 35/90
4. Subtract the two like fractions:
   126/90 - 35/90 = 126 - 35/90 = 91/90
5. In mixed form: 11/90

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