Answers

Subtract 90/12 from 42/75

1^st number: 42/75, 2^nd number: 7 6/12

42/75 - 90/12 is -347/50.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 12 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 75 × 4 = 300,
   42/75 = 42 × 4/75 × 4 = 168/300
3. Likewise, for the 2nd fraction, since 12 × 25 = 300,
   90/12 = 90 × 25/12 × 25 = 2250/300
4. Subtract the two like fractions:
   168/300 - 2250/300 = 168 - 2250/300 = -2082/300
5. After reducing the fraction, the answer is -347/50

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