Answers

Subtract 75/28 from 40/42

1^st number: 40/42, 2^nd number: 2 19/28

40/42 - 75/28 is -145/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 28 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   40/42 = 40 × 2/42 × 2 = 80/84
3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
   75/28 = 75 × 3/28 × 3 = 225/84
4. Subtract the two like fractions:
   80/84 - 225/84 = 80 - 225/84 = -145/84

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