Answers

Subtract 90/49 from 42/75

1^st number: 42/75, 2^nd number: 1 41/49

42/75 - 90/49 is -1564/1225.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 49 is 3675
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3675
2. For the 1st fraction, since 75 × 49 = 3675,
   42/75 = 42 × 49/75 × 49 = 2058/3675
3. Likewise, for the 2nd fraction, since 49 × 75 = 3675,
   90/49 = 90 × 75/49 × 75 = 6750/3675
4. Subtract the two like fractions:
   2058/3675 - 6750/3675 = 2058 - 6750/3675 = -4692/3675
5. After reducing the fraction, the answer is -1564/1225

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