Answers

Subtract 42/56 from 15/75

15/75 - 42/56 is -11/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 56 is 4200
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4200
2. For the 1st fraction, since 75 × 56 = 4200,
   15/75 = 15 × 56/75 × 56 = 840/4200
3. Likewise, for the 2nd fraction, since 56 × 75 = 4200,
   42/56 = 42 × 75/56 × 75 = 3150/4200
4. Subtract the two like fractions:
   840/4200 - 3150/4200 = 840 - 3150/4200 = -2310/4200
5. After reducing the fraction, the answer is -11/20

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