Answers

Subtract 50/21 from 42/75

1^st number: 42/75, 2^nd number: 2 8/21

42/75 - 50/21 is -956/525.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 21 is 525
   
   Next, find the equivalent fraction of both fractional numbers with denominator 525
2. For the 1st fraction, since 75 × 7 = 525,
   42/75 = 42 × 7/75 × 7 = 294/525
3. Likewise, for the 2nd fraction, since 21 × 25 = 525,
   50/21 = 50 × 25/21 × 25 = 1250/525
4. Subtract the two like fractions:
   294/525 - 1250/525 = 294 - 1250/525 = -956/525

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