Answers

Subtract 20/28 from 15/8

1^st number: 1 7/8, 2^nd number: 20/28

15/8 - 20/28 is 65/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 28 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 8 × 7 = 56,
   15/8 = 15 × 7/8 × 7 = 105/56
3. Likewise, for the 2nd fraction, since 28 × 2 = 56,
   20/28 = 20 × 2/28 × 2 = 40/56
4. Subtract the two like fractions:
   105/56 - 40/56 = 105 - 40/56 = 65/56
5. In mixed form: 19/56

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