Answers

Subtract 15/8 from 28/30

1^st number: 28/30, 2^nd number: 1 7/8

28/30 - 15/8 is -113/120.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 8 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 30 × 4 = 120,
   28/30 = 28 × 4/30 × 4 = 112/120
3. Likewise, for the 2nd fraction, since 8 × 15 = 120,
   15/8 = 15 × 15/8 × 15 = 225/120
4. Subtract the two like fractions:
   112/120 - 225/120 = 112 - 225/120 = -113/120

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