Answers

Subtract 30/90 from 36/28

1^st number: 1 8/28, 2^nd number: 30/90

36/28 - 30/90 is 20/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 90 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 28 × 45 = 1260,
   36/28 = 36 × 45/28 × 45 = 1620/1260
3. Likewise, for the 2nd fraction, since 90 × 14 = 1260,
   30/90 = 30 × 14/90 × 14 = 420/1260
4. Subtract the two like fractions:
   1620/1260 - 420/1260 = 1620 - 420/1260 = 1200/1260
5. After reducing the fraction, the answer is 20/21

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